CN215894335U - Hydrogen sulfide gas supply device and test system - Google Patents
Hydrogen sulfide gas supply device and test system Download PDFInfo
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- CN215894335U CN215894335U CN202121967355.XU CN202121967355U CN215894335U CN 215894335 U CN215894335 U CN 215894335U CN 202121967355 U CN202121967355 U CN 202121967355U CN 215894335 U CN215894335 U CN 215894335U
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Abstract
The utility model discloses a hydrogen sulfide gas supply device and a test system, wherein the hydrogen sulfide gas supply device comprises: h2The S gas cylinder is connected with one end of the first pipeline; h2S selection valve, said H2A first port of the S selection valve is connected with the other end of the first pipeline; first H2An S flow meter installed on the second pipeline, the first H2S flow meter and said H2The second port of the S selection valve is connected; second H2An S flow meter installed on a third pipeline, the second H2S flow meter and said H2The third port of the S selection valve is connected; wherein the first H2S flow meter and the second H2S flow meter parallel connectionThe first H2S flow meter and the second H2S flow meters connected in parallel, the first H2The maximum measuring range of the S flow meter is 5L/min, and the second H2The maximum measuring range of the S flow meter is 10 mL/min. The utility model improves the control capability of testers on the hydrogen sulfide gas flow, and improves the effectiveness, accuracy and safety of the test in the corrosion resistance test.
Description
Technical Field
The utility model relates to the technical field of test equipment, in particular to a hydrogen sulfide gas supply device and a test system.
Background
The corrosion resistance test is carried out by immersing a non-stressed test specimen in either of two standard solutions. Solution A containing saturated hydrogen sulfide (H) at room temperature and normal pressure2S), sodium chloride (NaCl) and acetic acid (CH)3COOH) in distilled or deionized water; solution B: saturated hydrogen sulfide (H) at normal temperature and pressure2S) artificial seawater. After the immersion for a predetermined time, the sample was taken out and evaluated. Because the high-toxicity substance hydrogen sulfide is used in the test process, the whole test process is involved in high-risk operation, and the operation is one of the operations needing to be subjected to key management and control. As the pipeline industry in China is developed at a high speed, higher requirements are put forward on the performance of the pipeline steel, particularly, the pipeline steel has good hydrogen-induced crack resistance, the concentration of hydrogen sulfide contained in a natural gas product is higher, the generated hydrogen has serious corrosion resistance, the requirement on the hydrogen corrosion resistance of the pipeline is higher, and new requirements are put forward on the stability, accuracy and timeliness of the corrosion resistance test of the pipeline steel. With the revision of the acid corrosion resistance test standard of the industry and the stricter requirements on national safety and environmental protection, the existing test mode can not meet the inspection requirements.
The main reason is that the hydrogen sulfide solution is prepared in the existing test mode, the hydrogen sulfide gas is simply introduced into the water, the flow of the introduced hydrogen sulfide gas cannot be controlled, and the gas supply condition of the saturated hydrogen sulfide solution cannot be monitored in real time.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a hydrogen sulfide gas supply device and a test system, which are used for solving the technical problem that the hydrogen sulfide solution cannot be ensured to be in a continuous saturated state due to the fact that the gas supply condition of the saturated hydrogen sulfide solution cannot be monitored in real time in the prior art.
In a first aspect, an embodiment of the present invention provides a hydrogen sulfide gas supply apparatus, including:
H2the S gas cylinder is connected with one end of the first pipeline;
H2s selection valve, said H2A first port of the S selection valve is connected with the other end of the first pipeline;
first H2An S flow meter installed on the second pipeline, the first H2S flow meter and said H2The second port of the S selection valve is connected;
second H2An S flow meter installed on a third pipeline, the second H2S flow meter and said H2The third port of the S selection valve is connected; wherein,
the first H2S flow meter and the second H2S flow meters connected in parallel, the first H2The maximum measuring range of the S flow meter is 5L/min, and the second H2The maximum measuring range of the S flow meter is 10 mL/min.
In a possible embodiment, the apparatus further comprises:
H2s fine adjustment valve installed on the first pipeline, H2S fine adjustment valve is positioned in the H2S gas cylinder and H2S between the selection valves;
H2the S diaphragm valve is arranged on the fourth pipeline; wherein,
one end of the second pipeline and one end of the third pipeline are connected in a converging mode to form a converging end;
one end of the fourth pipeline is connected with the merging end.
In a possible embodiment, the apparatus further comprises:
H2s pressure reducing valve installed on the first pipe, H2S pressure reducing valve is positioned in the H2S gas cylinder and the H2S, fine adjustment between valves;
H2an S-valve front pressure transmitter mounted on the first pipe, H2The pressure transmitter before the S valve is positioned in the H2S gas cylinder and H2S, between the pressure reducing valves;
H2a post-S-valve pressure transmitter mounted on the first pipe, H2The pressure transmitter is positioned at the rear part of the S valve2S pressure reducing valve and the H2S between the trim valves.
In a second aspect, an embodiment of the present invention provides a testing system, where the system includes:
a test chamber;
the hydrogen sulfide gas supply device is positioned inside the test chamber;
a gas evacuation device located inside the test chamber;
a reactor located inside the test chamber; wherein,
the reactor is respectively communicated with the hydrogen sulfide gas supply device and the gas emptying device.
In a possible embodiment, the gas evacuation device comprises a nitrogen gas supply device comprising:
nitrogen gas bottle and N connected in sequence along nitrogen flow direction2Pressure transmitter before valve, N2Pressure reducing valve, N2Pressure transmitter, ooff valve, N behind valve2Fine adjustment valve, N2Flow meter and N2A diaphragm valve; the nitrogen gas cylinder and the N2Pressure transmitter before valve, N2Pressure reducing valve, N2Post-valve pressure transmitter, the switching valve, N2Trimming valve, N2Flow meter and said N2The diaphragm valves are all arranged on the fifth pipeline;
one end of the fifth pipeline is connected with the nitrogen gas bottle, and the other end of the fifth pipeline is communicated with the reactor.
In one possible embodiment, the system further comprises:
a flow direction valve installed on the first pipeline, the flow direction valve being located at H2S-valve post-pressure transmitter and H2S, fine adjustment between valves;
one end of the sixth pipeline is connected with the flow direction valve, the other end of the sixth pipeline is connected with the fifth pipeline, and the other end of the sixth pipeline is located between the switch valve and the N2Between the trim valves.
In one possible embodiment, the system further comprises:
a control device located outside the test chamber; the control device is respectively connected with the flow direction valve and the flow direction valve H2S fine adjustment valve, H2S selection valve, first H2S flowmeter, second H2S flowmeter, switch valve, N2Trimming valve and N2The flowmeter is electrically connected;
a data collector respectively connected with the first H2S flow meter, the second H2S flow meter and N2The flowmeter is electrically connected;
and the upper computer is electrically connected with the control device and the data acquisition unit respectively.
In one possible embodiment, the system further comprises:
an electromagnetic shut-off valve installed on the first pipeline and located at H2The S valve is arranged between the pressure transmitter and the flow direction valve;
the alarm is arranged on the inner wall of the test chamber;
the electromagnetic cut-off valve and the alarm are respectively electrically connected with the control device.
In one possible embodiment, the system further comprises:
the cameras are correspondingly installed inside the test chamber and outside the test chamber, and are respectively electrically connected with the control device.
In one possible embodiment, the system further comprises:
the neutralization absorption tower is arranged outside the experiment chamber;
the fan is arranged outside the test chamber and is positioned on one side of the neutralization absorption tower;
the circulating pump is arranged outside the test chamber and is positioned on one side of the neutralization absorption tower; wherein, the neutralization absorption tower is respectively communicated with the test chamber and the circulating pump, and the inlet of the fan is communicated with the top of the neutralization absorption tower.
Compared with the prior art, the hydrogen sulfide gas supply device and the test system provided by the utility model have the following advantages:
1. through the first H in parallel2S flow meter and second H2The S flow meter realizes the accurate supply of hydrogen sulfide gas through the first H2The S flow meter supplies large flow hydrogen sulfide gas to the solution, and when the concentration of the hydrogen sulfide in the solution reaches a required value, the hydrogen sulfide passes through H2S selector valve is switched to second H2And the S flow meter continuously introduces hydrogen sulfide gas, keeps the concentration of the hydrogen sulfide in the solution in a saturated state, improves the control capability of testers on the flow of the hydrogen sulfide gas, and improves the effectiveness and accuracy of the test in the corrosion resistance test.
2. The flow of the hydrogen sulfide gas is readable, so that the traceability of the test process is realized, the quantification of the flow of the hydrogen sulfide gas in the corrosion resistance test process is realized, and the test effectiveness can be better ensured.
Drawings
In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present specification, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a hydrogen sulfide gas supply device and a gas evacuation device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a testing system according to an embodiment of the present invention.
Description of reference numerals:
1-H2s gas cylinder, 2-first pipeline, 3-first port and 4-H2S selection valve, 5-first H2S flowmeter, 6-second pipeline, 7-second port and 8-second H2S flowmeter, 9-third pipeline, 10-third port and 11-H2S fine adjustment valve, 12-H2S diaphragm valve, 13-fourth pipeline, 14-H2S pressure reducing valve, 15-H2S valve front pressure transmitter, 16-H2Pressure transmitter behind S valve, 17-gas evacuation device, 18-nitrogen supply device, 19-fifth pipeline and 20-N2Pre-valve pressure transmitter, 21-N2Pressure reducing valve, 22-N2Pressure transmitter after valve, 23-switch valve, 24-N2Trimming valve, 25-N2Flowmeter, 26-N2The device comprises a diaphragm valve, 27-a sixth pipeline, 28-a flow direction valve, 29-a test chamber, 30-a control device, 31-a data collector, 32-an upper computer, 33-an electromagnetic shut-off valve, 34-a neutralization absorption tower, 35-an alarm, 36-a camera, 37-a reactor, 38-a buffer bottle, 39-an absorption tower, 40-a hydrogen sulfide gas supply device, 41-a nitrogen gas bottle, 42-a fan and 43-a circulating pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art based on the embodiments of the present invention belong to the scope of protection of the embodiments of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a hydrogen sulfide gas supply device 40 and a gas evacuation device 17 according to an embodiment of the present invention, in which the hydrogen sulfide gas supply device 40 includes:
H2s, a gas cylinder 1 is connected with one end of a first pipeline 2;
H2s selector valve 4, H2A first port 3 of the S selection valve 4 is connected with the other end of the first pipeline 2;
first H2S flow meter 5 mounted on second pipe 6, first H2S flow meter 5 and H2The second port 7 of the S selection valve 4 is connected;
second H2S flow meter 8 mounted on third conduit 9, second H2S flow meter 8 and H2The third port 10 of the S selection valve 4 is connected; wherein,
the second conduit 6 and the third conduit 9 are parallel conduits, thus the first H2S flowmeter 5 and second H2 S flow meters 8 are connected in parallel, the first H2The maximum measuring range of the S flow meter is 5L/min, and the second H2The maximum measuring range of the S flow meter is 10 mL/min.
Specifically, the first pipeline 2, the second pipeline 6 and the third pipeline 9 are made of stainless steel hard pipes, the wall thickness is 0.5-2.0mm, the material brand is SUS316L stainless steel, the stainless steel hard pipes are good in compression resistance and corrosion resistance, and the stainless steel hard pipes can be better applied to circulation of hydrogen sulfide gas. H2S selection valve 4 is a three-way valve, when in use, H is firstly selected2 S gas cylinder 1 is filled with hydrogen sulfide gas H2S, the gas cylinder 1 is firmly connected with the first pipeline 2 in a threaded structure, and outlets of the second pipeline 6 and the third pipeline 9 are introduced into a solution to be treated; then H is turned on2The S-selection valve 4 connects the first conduit 2 to the second conduit 6, passing through the first H2The S flow meter 5 supplies 200mL/min (per liter of solution) of large-flow hydrogen sulfide gas to the solution, so that the concentration of hydrogen sulfide in the solution with the concentration of hydrogen sulfide in the solution is more than or equal to 2300 ppm; finally through H2S selector valve 4 is switched to communicate with first pipeline 2 and third pipeline 9, and hydrogen sulfide gas is led to pass through second H2And the S flow meter 8 is continuously introduced into the solution at the flow rate of 8mL/min, and the concentration of the hydrogen sulfide in the solution is kept in a saturated state. It is understood that the first H2The measuring range of the S flow meter 5 is lower than the second H2S measuring range of the flowmeter 8, first H2The unit of the measuring range of the S flow meter 5 is L/min, and the second H2The unit of the measurement range of the S flow meter 8 is mLMin, first H2The measuring range of the S flow meter 5 is selected to be 5L/min, and the second H2S, the measuring range of the flowmeter 8 is 10mL/min, so that the measuring precision of the flow of the hydrogen sulfide gas is ensured; first H2S flowmeter 5 and second H2S the flowmeter 8 can select a mass flowmeter to control the flow of the hydrogen sulfide gas; of course, through the first H2S flowmeter 5 and second H2The flow rate of the hydrogen sulfide gas introduced into the solution by the S flow meter 8 can be selected according to the standard of the method for preparing the saturated hydrogen sulfide solution.
In a possible embodiment, the apparatus further comprises:
H2s fine adjustment valve 11 mounted on first pipe 2, H2S trim valve 11 is located at H2S cylinders 1 and H2S between the selector valves 4;
H2an S diaphragm valve 12 installed on the fourth pipe 13; wherein, one end of the second pipeline 6 and one end of the third pipeline 9 are joined and connected to form a junction end; one end of the fourth pipe 13 is connected to the merging end.
H2S fine adjustment valve 11 can be an electric control valve or a manual control valve and passes through H2S fine adjustment valve 11 controls the discharge flow of the hydrogen sulfide gas, and the specific flow can pass through the first H2S flowmeter 5 or second H2S flow meter 8. In order to ensure the safety and stability of the hydrogen sulfide gas supply device 40, the fourth pipeline 13 is also made of stainless steel hard pipe; h2The S-diaphragm valve 12 can ensure stable supply of hydrogen sulfide gas.
In a possible embodiment, the apparatus further comprises:
H2s pressure reducing valve 14 mounted on first pipe 2, H2S pressure reducing valve 14 is located at H2S cylinders 1 and H2S between the trim valves 11;
H2s pre-valve pressure transmitter 15 mounted on the first pipe 2, H2The pressure transmitter 15 before the S valve is positioned at H2S cylinders 1 and H2S between the pressure reducing valves 14;
H2s-valve post-pressure transmitter 16 mounted on first pipe 2, H2post-S-valve pressure transmitter 16 is located at H2S pressure reducing valve 14 and H2S trim valve 11.
H2The S pressure reducing valve 14 is used for the H pair2S, reducing the pressure of the high-pressure hydrogen sulfide gas in the gas cylinder 1 to obtain the hydrogen sulfide gas meeting the test pressure condition; while being H2S when the air pressure in the air bottle 1 fluctuates, H2The S pressure reducing valve 14 can automatically adjust the gas pressure to enable stable supply of hydrogen sulfide gas.
H2Pressure transmitter 15 before S valve can measure H2Pressure of hydrogen sulfide gas at inlet of S pressure reducing valve 14, H2Pressure transmitter 16 behind S valve can measure H2The pressure of the hydrogen sulfide gas at the outlet of the S pressure reducing valve 14 is convenient to monitor.
Because hydrogen sulfide gas is a highly toxic substance, it is a high risk operation to utilize hydrogen sulfide gas to carry out the corrosion performance test of tubular products and plates, and it is one of the operations that need to be managed and controlled. In order to improve the safety, stability and working efficiency of the test process, the utility model also provides a test system.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a testing system according to an embodiment of the present invention, the system including:
a test chamber 29;
a hydrogen sulfide gas supply device 40 located inside the test chamber 29;
a gas evacuation device 17 located inside the test chamber 29;
a reactor 37 located inside the test chamber 29; wherein,
the reactor 37 is connected to a hydrogen sulfide gas supply device 40 and a gas evacuation device 17, respectively.
Specifically, the test chamber 29 is a sealed structure for preventing leakage of hydrogen sulfide gas. Of course, in order to improve the convenience of use, the test chamber 29 may be provided with a test door having a sealing structure, and the test chamber 29 may be provided with a transparent viewing window.
When the test system is used, firstly, gas which is difficult to dissolve in water is introduced into the reactor 37 through the gas emptying device 17 for 1-2h to discharge oxygen and other soluble gases dissolved in the solution in the reactor 37.
Then introducing hydrogen sulfide gas into the solution in the reactor 37 through a hydrogen sulfide gas supply device 40 to obtain a saturated hydrogen sulfide solution; and finally, carrying out corrosion resistance test on the pipe or the plate by using a saturated hydrogen sulfide solution. For example, the saturated hydrogen sulfide solution may be pumped out by a constant delivery pump to perform the test, or the pipe or plate may be directly immersed in the reactor 37 to perform the test.
In a possible embodiment, the gas evacuation device 17 may be a nitrogen gas supply device comprising:
one end of the fifth pipe 19 is connected to a nitrogen gas cylinder 41, and the other end of the fifth pipe 19 communicates with the reactor 37.
Since nitrogen is poorly soluble in water, it is better able to remove oxygen and other soluble gases from the solution in reactor 37.
In one possible embodiment, the system further comprises:
a flow direction valve 28 installed on the first pipe 2, the flow direction valve 28 being located at H2S-valve post-pressure transmitter 16 and H2S between the trim valves 11;
a sixth pipe 27, one end of the sixth pipe 27 being connected to the flow direction valve 28, the other end of the sixth pipe 27 being connected to the fifth pipe 19, the other end of the sixth pipe 27 being located at the on-off valve 23 and N2Between trim valves 24.
The flow direction valve 28 is a three-way valve and is used for controlling hydrogen sulfide gas to enter the reactor 37 or nitrogen gas to enter the reactor 37, and residual hydrogen sulfide gas in the second pipeline 6, the third pipeline 9 and the fourth pipeline 13 can be blown to the reactor 37 through the nitrogen gas by switching the flow direction valve 28, so that the residual hydrogen sulfide gas is prevented from being leaked and causing pollution.
In one possible embodiment, the system further comprises:
a control device 30 located outside the test chamber 29; the control device 30 is connected to the flow direction valves 28, H2S fine adjustment valve 11, H2S selector valve 4, first H2S flowmeter 5, second H2S flowmeter 8, switching valve 23, N2Trim valve 24 and N2The flow meter 25 is electrically connected;
and the upper computer 32 is electrically connected with the control device 30 and the data acquisition device 31 respectively.
The control device 30 is a programmable logic controller (plc) controller for controlling each valve and each flow meter; the data collector 31 is used for acquiring flow data of hydrogen sulfide gas and nitrogen in real time and feeding the flow data back to the upper computer 32 for recording, so that the traceability of the test process is realized. The upper computer 32 is a PC (personal computer), and upper computer software is installed in the upper computer 32 and can send an instruction to the control device 30 to control on-off adjustment of each valve. Of course, data collector 31 can also be connected to H2S valve front pressure transmitter 15, H2S-valve back pressure transmitter 16, N2 Pre-valve pressure transmitter 20, N2The pressure transmitter 22 behind the valve is electrically connected to acquire real-time pressure data of hydrogen sulfide gas and nitrogen gas, and send the real-time pressure data to the upper computer 32 for monitoring, and if the upper computer 32 determines that the real-time pressure data exceeds a pressure monitoring threshold, prompt information is sent through a human-computer interface to remind a tester. The upper computer 32 can remotely operate and monitor the hydrogen sulfide gas supply device 40 and the nitrogen gas supply device 18, so that the test process can be mastered in an all-around manner, and the safety of the test process is improved.
In one possible embodiment, the system further comprises:
an electromagnetic shut-off valve 33 mounted on the first pipe 2The magnetic cut-off valve 33 is positioned at H2post-S-valve pressure transmitter 16 and flow direction valve 28;
an alarm 35 mounted on an inner wall of the test chamber 29;
the electromagnetic shut-off valve 33 and the alarm 35 are respectively electrically connected with the control device 30.
Monitoring the concentration of hydrogen sulfide gas in the test chamber 29 through an alarm 35, feeding the concentration of the hydrogen sulfide gas back to the upper computer 32, if the upper computer 32 determines that the concentration of the hydrogen sulfide gas exceeds a concentration monitoring threshold, sending an alarm instruction and a valve cutting instruction to the PLC, and controlling the alarm 35 to send out an audible and visual alarm by the PLC according to the alarm instruction so as to remind a tester to process in time; meanwhile, the PLC controls the electromagnetic cut-off valve 33 to be closed according to the valve cut-off instruction, so that the continuous leakage of the hydrogen sulfide gas is avoided. The mode of this embodiment hydrogen sulfide gas automatic monitoring replaces the mode of artifical inspection, can improve the efficiency and the accuracy of data monitoring.
In one possible embodiment, the system further comprises:
the plurality of cameras 36 are mounted inside the test chamber 29 and outside the test chamber 29, and the plurality of cameras 36 are electrically connected to the control device 30.
For example, the number of the cameras 36 is two, and one camera 36 is disposed inside the test chamber 29, so that the internal environment of the test chamber 29 can be observed, for example: after the hydrogen sulfide gas is introduced into the reactor 37, the bubble state of the solution in the reactor 37; the camera 36 is arranged outside the test chamber 29, the personnel dynamics around the test chamber 29 can be monitored through the upper computer 32, and the personnel are prohibited from entering the peripheral area of the test chamber 29 during the test period, so that accidents are prevented.
In one possible embodiment, the system further comprises:
a buffer bottle 38 installed inside the test chamber 29, the buffer bottle 38 being located at one side of the reactor 37; an absorption tower 39 installed inside the test chamber 29, the absorption tower 39 being located at one side of the buffer bottle 38; wherein,
the reactor 37 is communicated with a buffer tank 38, and the buffer tank 38 is communicated with an absorption column 39.
The capacity of the solution inside the reactor 37 for dissolving hydrogen sulfide gas is limited, and the redundant hydrogen sulfide gas flows into the buffer bottle 38 to balance the air pressure in the reactor 37, and meanwhile, the redundant hydrogen sulfide gas flows into the absorption tower 39 for absorption, so that the leakage of the hydrogen sulfide gas is avoided.
In one possible embodiment, the system further comprises:
a neutralization absorption tower 34 installed outside the laboratory chamber 29;
a fan 42 installed outside the test chamber 29, the fan 42 being located at one side of the neutralization absorption tower 34;
a circulation pump 43 installed outside the test chamber 29, the circulation pump 43 being located at one side of the neutralization absorption tower 34; wherein the neutralization absorption tower 34 is respectively communicated with the test chamber 29 and the circulating pump 43, and the inlet of the blower 42 is communicated with the top of the neutralization absorption tower 34.
If the test system has hydrogen sulfide gas leakage, the alarm 35 monitors that the concentration of the hydrogen sulfide gas in the test chamber 29 reaches a monitoring threshold value, the electromagnetic cut-off valve 33 automatically cuts off a hydrogen sulfide gas path, the fan 42 is started to pump the leaked hydrogen sulfide gas into the neutralization absorption tower for neutralization treatment, the neutralization treatment mode can adopt spraying, and an inlet and an outlet of the circulating pump 43 are respectively communicated with the upper part and the bottom side surface of the neutralization absorption tower 34 and are used for enabling the residual hydrogen sulfide gas in the neutralization absorption tower 34 to circularly flow, so that the neutralization treatment effect is enhanced. And the gas is discharged from an outlet of the fan 42 after neutralization treatment, so that the leakage pollution of the hydrogen sulfide gas is avoided.
The hydrogen sulfide gas supply device and the test system provided by the utility model have the following beneficial effects that:
1. through the first H in parallel2S flow meter and second H2The S flow meter realizes the accurate supply of hydrogen sulfide gas through the first H2The S flow meter supplies large flow hydrogen sulfide gas to the solution, and when the concentration of the hydrogen sulfide in the solution reaches a required value, the hydrogen sulfide passes through H2S selector valve is switched to second H2The S flow meter continuously introduces hydrogen sulfide gas and keeps the concentration of the hydrogen sulfide in the solution in a saturated state; improves the control of the tester on the flow of the hydrogen sulfideThe manufacturing capability improves the effectiveness and accuracy of the test in the corrosion resistance test.
2. The flow of the hydrogen sulfide gas is readable, so that the traceability of the test process is realized, the quantification of the flow of the hydrogen sulfide gas in the corrosion resistance test process is realized, and the test effectiveness can be better ensured.
3. The operation conditions of the hydrogen sulfide gas supply device and the nitrogen gas supply device are remotely monitored and operated, the test data are monitored and transmitted on line, corresponding waste liquid and waste gas treatment and safety protection measures are perfected, and the working efficiency and the automation level of the acid corrosion resistance test can be further improved.
4. When the hydrogen sulfide gas leaks, the monitoring alarm is carried out, and the neutralizing absorption tower, the fan and the circulating pump are started to carry out chain neutralizing treatment, so that the hydrogen sulfide gas is prevented from leaking and polluting, and the safety and the emergency handling capacity of the corrosion resistance test are improved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A hydrogen sulfide gas supply apparatus, characterized in that the apparatus comprises:
H2the S gas cylinder is connected with one end of the first pipeline;
H2s selection valve, said H2A first port of the S selection valve is connected with the other end of the first pipeline;
first H2S flowmeter, anMounted on a second conduit, said first H2S flow meter and said H2The second port of the S selection valve is connected;
second H2An S flow meter installed on a third pipeline, the second H2S flow meter and said H2The third port of the S selection valve is connected; wherein,
the first H2S flow meter and the second H2S flow meters connected in parallel, the first H2The maximum measuring range of the S flow meter is 5L/min, and the second H2The maximum measuring range of the S flow meter is 10 mL/min.
2. The hydrogen sulfide gas supply apparatus according to claim 1, further comprising:
H2s fine adjustment valve installed on the first pipeline, H2S fine adjustment valve is positioned in the H2S gas cylinder and H2S between the selection valves;
H2the S diaphragm valve is arranged on the fourth pipeline; wherein,
one end of the second pipeline and one end of the third pipeline are connected in a converging mode to form a converging end;
one end of the fourth pipeline is connected with the merging end.
3. The hydrogen sulfide gas supply apparatus according to claim 2, further comprising:
H2s pressure reducing valve installed on the first pipe, H2S pressure reducing valve is positioned in the H2S gas cylinder and the H2S, fine adjustment between valves;
H2an S-valve front pressure transmitter mounted on the first pipe, H2The pressure transmitter before the S valve is positioned in the H2S gas cylinder and H2S, between the pressure reducing valves;
H2a post-S-valve pressure transmitter mounted on the first pipe, H2The pressure transmitter is positioned at the rear part of the S valve2S pressure reducing valve and the H2S fine adjustment valveIn the meantime.
4. A testing system, the system comprising:
a test chamber;
the hydrogen sulfide gas supply apparatus of any one of claims 1-3, located inside the test chamber;
a gas evacuation device located inside the test chamber;
a reactor located inside the test chamber; wherein,
the reactor is respectively communicated with the hydrogen sulfide gas supply device and the gas emptying device.
5. The testing system of claim 4, wherein said gas evacuation device comprises a nitrogen gas supply device comprising:
nitrogen gas bottle and N connected in sequence along nitrogen flow direction2Pressure transmitter before valve, N2Pressure reducing valve, N2Pressure transmitter, ooff valve, N behind valve2Fine adjustment valve, N2Flow meter and N2A diaphragm valve; the nitrogen gas cylinder and the N2Pressure transmitter before valve, N2Pressure reducing valve, N2Post-valve pressure transmitter, the switching valve, N2Trimming valve, N2Flow meter and said N2The diaphragm valves are all arranged on the fifth pipeline;
one end of the fifth pipeline is connected with the nitrogen gas bottle, and the other end of the fifth pipeline is communicated with the reactor.
6. The testing system of claim 5, further comprising:
a flow direction valve installed on the first pipeline, the flow direction valve being located at H2S-valve post-pressure transmitter and H2S, fine adjustment between valves;
a sixth pipeline, one end of which is connected with the flow direction valve and the other end of which is connected with the flow direction valveThe other end of the sixth pipeline is positioned between the switch valve and the N2Between the trim valves.
7. The testing system of claim 6, further comprising:
a control device located outside the test chamber; the control device is respectively connected with the flow direction valve and the flow direction valve H2S fine adjustment valve, H2S selection valve, first H2S flowmeter, second H2S flowmeter, switch valve, N2Trimming valve and N2The flowmeter is electrically connected;
a data collector respectively connected with the first H2S flow meter, the second H2S flow meter and N2The flowmeter is electrically connected;
and the upper computer is electrically connected with the control device and the data acquisition unit respectively.
8. The testing system of claim 7, further comprising:
an electromagnetic shut-off valve installed on the first pipeline and located at H2The S valve is arranged between the pressure transmitter and the flow direction valve;
the alarm is arranged on the inner wall of the test chamber;
the electromagnetic cut-off valve and the alarm are respectively electrically connected with the control device.
9. The testing system of claim 7, further comprising:
the cameras are correspondingly installed inside the test chamber and outside the test chamber, and are respectively electrically connected with the control device.
10. The testing system of claim 4, further comprising:
the neutralization absorption tower is arranged outside the experiment chamber;
the fan is arranged outside the test chamber and is positioned on one side of the neutralization absorption tower;
the circulating pump is arranged outside the test chamber and is positioned on one side of the neutralization absorption tower; wherein, the neutralization absorption tower is respectively communicated with the test chamber and the circulating pump, and the inlet of the fan is communicated with the top of the neutralization absorption tower.
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| CN202121967355.XU CN215894335U (en) | 2021-08-20 | 2021-08-20 | Hydrogen sulfide gas supply device and test system |
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| CN202121967355.XU CN215894335U (en) | 2021-08-20 | 2021-08-20 | Hydrogen sulfide gas supply device and test system |
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| CN119779793A (en) * | 2025-01-07 | 2025-04-08 | 中国测试技术研究院化学研究所 | Device and method for preparing sulfide standard solution |
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