CN104771850A - Chemical leakage treatment system - Google Patents
Chemical leakage treatment system Download PDFInfo
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- CN104771850A CN104771850A CN201510166049.9A CN201510166049A CN104771850A CN 104771850 A CN104771850 A CN 104771850A CN 201510166049 A CN201510166049 A CN 201510166049A CN 104771850 A CN104771850 A CN 104771850A
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Abstract
The invention relates to the technical field of the prevention of chemical leakage, and discloses a chemical leakage treatment system, which is used for reducing the harm of the chemical leakage to a person and an environment, and improving the automatic management of the treatment of the chemical leakage. The chemical leakage treatment system comprises a chemical cabinet, a leakage discharge pipeline and a first output pipeline, wherein the chemical cabinet is used for storing a chemical; a chemical storage tank is arranged in the chemical cabinet; the leakage discharge pipeline is used for discharging the chemical leaking in the chemical cabinet; the first output pipeline is used for outputting the chemical in the chemical storage tank; the leakage discharge pipeline and the first output pipeline are provided with a first control valve and a second control valve respectively; the chemical leakage treatment system also comprises a detection device, a leakage treatment device and a control device, wherein the detection device is used for detecting a chemical leakage amount in the chemical cabinet; the leakage treatment device is used for spraying a treating agent into the chemical cabinet, and the control device is connected with the detection device and the leakage treatment device in a signal manner, and is used for controlling the opening and the closing of the first control valve, the second control valve and the leakage treatment device according to a comparison result between the chemical leakage amount and a set threshold value.
Description
Technical field
The present invention relates to and prevent chemical leakage technical field, particularly relate to a kind of chemical leakage treatment system.
Background technology
(deep-etching class is as the concentrated sulfuric acid, nitric acid, hydrofluoric acid etc. for hazardous chemical; Inflammable and explosive class is as hydrogen, carbon monoxide, various hydrocarbon, alkane etc.) as a kind of important raw and processed materials of modern industry, be widely used in all trades and professions, especially the high-tech enterprise such as electronic manufacture, semiconductor, photovoltaic manufacture.
In prior art, hazardous chemical generally stores with chemicals cabinet, chemicals storage tank is provided with in chemicals cabinet, chemicals cabinet is provided with and leaks discharge pipe and the output pipe for being exported by the chemicals in chemicals storage tank, because the current scope of application of hazardous chemical is extensive, almost the event of all dangerous chemical leakage occurs all the time, although do not develop into fire, blast or intoxication accident when majority, causes serious property loss or environmental pollution.Dangerous chemical leakage accident, once out of control, often causes fire disaster, blast or intoxication accident, causes the extreme loss of people and property, environment.
Turn off the control valve on chemicals cabinet output pipe after the current process to dangerous chemical leakage mainly adopts detecting/warning, recycling manually process, if process not in time or incorrect still can produce personnel injury and environmental disruption.
Summary of the invention
The object of this invention is to provide a kind of chemical leakage treatment system, in order to reduce the harm that chemical leakage causes human and environment, improve the automatic management of chemical leakage process.
For achieving the above object, the invention provides following technical scheme:
The invention provides a kind of chemical leakage treatment system, comprise: for the chemicals cabinet of storage of chemical product, chemicals storage tank is provided with in described chemicals cabinet, for discharging the leakage discharge pipe of described chemicals cabinet internal leakage chemicals and the first output pipe for being exported by the chemicals in chemicals storage tank, and described leakage discharge pipe and described first output pipe are respectively equipped with the first control valve and the second control valve, also comprise:
Arrangement for detecting, for detecting the chemical leakage amount in described chemicals cabinet;
Leakage treating device, for spraying inorganic agent in described chemicals cabinet;
The control device be connected with described arrangement for detecting and described leakage treating device signal, for according to the comparative result of chemical leakage amount with setting threshold value, controls the open and close of described first control valve, the second control valve and leakage treating device.
Chemical leakage treatment system provided by the invention, can by the leakage situation of arrangement for detecting moment monitoring chemicals cabinet, by control device according to the comparative result of chemical leakage amount with setting threshold value, control the open and close of described first control valve, the second control valve and leakage treating device.Namely when the leakage rate detected in chemicals cabinet when arrangement for detecting reaches certain value, control device can control the second control valve and cut out, chemicals cabinet is made to stop outwards exporting chemicals and outwards carrying leaking chemicals, control the first control valve to open, start discharge and leak chemicals, control leakage control device to start to spray inorganic agent simultaneously, inorganic agent and leakage product are made to carry out neutralizing or diluting, eliminate, to realize the process to leaking chemicals, compared with prior art, do not need people to be that place to go reason leaks chemicals, reduce the contact of people and chemicals.
So chemical leakage treatment system provided by the invention, can reduce the harm that chemical leakage causes human and environment, improve the automatic management of chemical leakage process.
In some optional embodiments, described leakage treating device comprises:
Inorganic agent storage tank;
Be arranged at the multiple spray heads in described chemicals cabinet;
For the second output pipe that described multiple spray head is communicated with described inorganic agent storage tank;
Be arranged at the 3rd control valve on described second output pipe, described 3rd control valve is connected with described control device signal, described control device is further used for, according to the comparative result of chemical leakage amount with setting threshold value, controlling the open and close of described 3rd control valve.
In some optional embodiments, described control device specifically for:
When the chemical leakage amount received is more than or equal to the first setting value, control that described second control valve is closed, described first control valve and the 3rd control valve are opened until when the chemical leakage amount that receives is less than the first setting value, controls described 3rd control valve and close.
In some optional embodiments, above-mentioned chemical leakage treatment system also comprises: the warning device be connected with described control device signal;
Described control device is further used for:
When the chemical leakage amount received is more than or equal to the first setting value and is less than the second setting value, control that described second control valve and the 3rd control valve are closed, the first control valve is opened and warning device alarm;
When the chemical leakage amount received is more than or equal to the second setting value, control that described second control valve is closed, described first control valve and the 3rd control valve are opened until when the chemical leakage amount that receives is less than the first setting value, controls described 3rd control valve and close.The setting of warning device detects error in order to prevent arrangement for detecting, after warning device is reported to the police, staff can be reminded again to detect, after confirming that chemicals cabinet leaks, then controls leakage treating device and carries out work.
In some optional embodiments, described warning device is buzzer or signal lamp.
In some optional embodiments, when the inorganic agent in described leakage treating device is liquid, described leakage treating device also comprises: be arranged at the delivery pump be connected on described second output pipe, with described control device signal, when described control device is also for being more than or equal to the second setting value according to the chemical leakage amount received, controls described delivery pump and opening.The setting of delivery pump is convenient to improve the fluency that inorganic agent transports in the second output pipe.
In some optional embodiments, when the inorganic agent in described leakage treating device is liquid, described chemical leakage treatment system also comprises:
Stand-by storage, described stand-by storage is communicated with the chemicals storage tank in described chemicals cabinet by the 3rd output pipe;
Be arranged at the 4th control valve on described 3rd output pipe, described 4th control valve is connected with described control device signal, described control device also for: when the chemical leakage amount received is more than or equal to the second setting value, control described 4th control valve to open, the chemicals in described chemicals storage tank is transported to described stand-by storage by the 3rd output pipe.Chemicals in chemicals cabinet can be transported in stand-by storage by arranging of stand-by storage, reduces the leakage loss of chemicals.
In some optional embodiments, when the inorganic agent in described leakage treating device is pyrophoric gas, described chemical storage tank is provided with outlet, and described outlet is communicated with by the 5th control valve with one end of described first output pipe.
In some optional embodiments, the setting position of described multiple spray head is away from described 5th control valve.Avoid inorganic agent directly to spray leakage chemicals, cause the generation of leaking chemicals spontaneous combustion or explosion phenomenon.
In some optional embodiments, described leakage treating device also comprises: for detecting the sensor of the treatment dosage in described inorganic agent storage tank, described sensor is connected with described control device signal.Treatment dosage in real time reaction inorganic agent storage tank, reminds staff to supplement inorganic agent in time, is conducive to automatic management.
Accompanying drawing explanation
The first structural representation of the chemical leakage treatment system that Fig. 1 provides for the embodiment of the present invention;
The second structural representation of the chemical leakage treatment system that Fig. 2 provides for the embodiment of the present invention;
The third structural representation of the chemical leakage treatment system that Fig. 3 provides for the embodiment of the present invention.
Reference numeral:
1-chemicals cabinet 11-chemicals storage tank
2-first output pipe 3-leaks discharge pipe
4-arrangement for detecting 5-control device
6-leakage treating device 61-inorganic agent storage tank
62-spray head 63-second output pipe
64-warning device 65-delivery pump
66-stand-by storage 67-the 3rd output pipe
68-sensor 71-first control valve
72-second control valve 73-the 3rd control valve
74-the 4th control valve 75-the 5th control valve
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of patent protection of the present invention.
In order to solve in prior art for chemical leakage, need the problem manually carrying out processing, the invention provides a kind of chemical leakage treatment system, as shown in Figure 1, the first structural representation of the chemical leakage treatment system that Fig. 1 provides for the embodiment of the present invention; Above-mentioned chemical leakage treatment system comprises: for the chemicals cabinet 1 of storage of chemical product, chemicals storage tank 11 is provided with in chemicals cabinet 1, for discharging the leakage discharge pipe 3 of chemicals cabinet 1 internal leakage chemicals and the first output pipe 2 for being exported by the chemicals in chemicals storage tank 11, and leakage discharge pipe 3 and the first output pipe 2 are respectively equipped with the first control valve 71 and the second control valve 72, also comprise:
Arrangement for detecting 4, for the chemical leakage amount in detection of chemicals cabinet 1;
Leakage treating device 6, for spraying inorganic agent in chemicals cabinet 1;
The control device 5 be connected with arrangement for detecting 4 and leakage treating device 6 signal, for according to the comparative result of chemical leakage amount with setting threshold value, controls the open and close of the first control valve 71, second control valve 72 and leakage treating device 6.
Chemical leakage treatment system provided by the invention, can by the leakage situation of arrangement for detecting 4 moment monitoring chemicals cabinet 1, by control device 5 according to the comparative result of chemical leakage amount with setting threshold value, control the open and close of the first control valve 71, second control valve 72 and leakage treating device 6.Namely when the leakage rate detected in chemicals cabinet 1 when arrangement for detecting 4 reaches certain value, control device 5 can control the second control valve 72 and cut out, chemicals cabinet 1 is made to stop outwards exporting chemicals and outwards carrying leaking chemicals, control the first control valve 71 to open, start discharge and leak chemicals, control leakage control device 6 to start to spray inorganic agent simultaneously, inorganic agent is made to carry out neutralizing or diluting with leakage chemicals, eliminate, to realize the process to leaking chemicals, compared with prior art, people is not needed to be that place to go reason leaks chemicals, reduce the contact of people and chemicals.
So chemical leakage treatment system provided by the invention, can reduce the harm that chemical leakage causes human and environment, improve the automatic management of chemical leakage process.
Further, as shown in Figure 2, the second structural representation of chemical leakage treatment system of providing for the embodiment of the present invention of Fig. 2; Leakage treating device 6 comprises:
Inorganic agent storage tank 61;
Be arranged at the multiple spray heads 62 in chemicals cabinet;
For the second output pipe 63 that multiple spray head 62 is communicated with inorganic agent storage tank 61;
The 3rd control valve the 73, three control valve 73 be arranged on the second output pipe 63 is connected with control device 5 signal, and control device 5 is further used for, according to the comparative result of chemical leakage amount with setting threshold value, controlling the open and close of the 3rd control valve 73.
Above-mentioned control device 5, for the comparative result according to chemical leakage amount and setting threshold value, controls the open and close of the first control valve 71, second control valve 72 and leakage treating device 6, specifically can comprise:
In a kind of optional embodiment, control device 5 specifically for:
When the chemical leakage amount received is more than or equal to the first setting value, controls that the second control valve 72 is closed, the first control valve 71 and the 3rd control valve 73 open until when the chemical leakage amount that receives is less than the first setting value, controls the 3rd control valve 73 and close.Namely when arrangement for detecting 4 detect chemical leakage amount be more than or equal to the first setting value time, control device 5 controls the first transfer pipeline 2 and cuts out, discharge pipe 3 is leaked in control and leakage treating device 6 works, to inject process agent in chemicals cabinet, inorganic agent can react with the chemicals leaked, the chemicals that neutralization or dilution are leaked, neutralization simultaneously or the leakage chemicals after diluting can be discharged in leakage discharge pipe 3, owing to having been diluted from the liquid leaking discharge pipe 3 discharge or having been neutralized, therefore can not to human body or environmental pollution, when arrangement for detecting 4 detects that chemical leakage amount is less than the first setting value, control device 5 can control leakage treating device 6 and stop inject process agent.
In another kind of detailed description of the invention, above-mentioned chemical leakage treatment system also comprises: the warning device 64 be connected with control device 5 signal;
Control device 5 is further used for:
When the chemical leakage amount received is more than or equal to the first setting value and is less than the second setting value, control the second control valve 72 and the 3rd control valve 73 is closed, the first control valve 71 is opened and warning device 64 is reported to the police;
When the chemical leakage amount received is more than or equal to the second setting value, controls that the second control valve 72 is closed, the first control valve 71 and the 3rd control valve 73 open until when the chemical leakage amount that receives is less than the first setting value, controls the 3rd control valve 73 and close.The setting of warning device 64 detects error in order to prevent arrangement for detecting 4, after warning device 64 is reported to the police, staff can be reminded again to detect, after confirming that chemicals cabinet leaks, then controls leakage treating device 6 and carries out work.
Above-mentioned first setting value and second setting value those skilled in the art can rule of thumb set.
Optionally, above-mentioned warning device is buzzer or signal lamp.
As Fig. 2, when the inorganic agent in leakage treating device 6 is liquid, leakage treating device 6 also comprises: be arranged at the delivery pump 65 be connected on the second output pipe 63, with control device 5 signal, when control device 5 is also for being more than or equal to the second setting value according to the chemical leakage amount received, controls delivery pump 65 and opening.The setting of delivery pump 65 is convenient to improve the fluency that inorganic agent transports in the second efferent duct 63.Certainly, the first output pipe 2 and leakage discharge pipe 3 also can arrange delivery pump 65.
As shown in Figure 2, when the inorganic agent in leakage treating device is liquid, chemical leakage treatment system also comprises:
Stand-by storage 66, stand-by storage 66 is communicated with the chemicals storage tank 11 in chemicals cabinet 1 by the 3rd output pipe 67;
Be arranged at the 4th control valve 74 on the 3rd output pipe 67,4th control valve 74 is connected with control device 5 signal, control device 5 also for: when the chemical leakage amount received is more than or equal to the second setting value, control the 4th control valve 74 to open, the chemicals in chemicals storage tank 11 is transported to stand-by storage 66 by the 3rd output pipe 67.Chemicals in chemicals cabinet 1 can be transported in stand-by storage 66 by arranging of stand-by storage 66, reduces the leakage loss of chemicals.
As shown in Figure 3, the third structural representation of the chemical leakage treatment system that Fig. 3 embodiment of the present invention provides, when the inorganic agent in leakage treating device is pyrophoric gas, chemical storage tank is provided with outlet, and outlet is communicated with by the 5th control valve 75 with one end of the first output pipe 2.Above-mentioned first control valve 71, second control valve 72, the 3rd control valve 73, the 4th control valve 74 and the 5th control valve 75 can be selected pneumatic or electronic according to the character of inorganic agent.
Further, the setting position of multiple spray head 62 is away from the 5th control valve 75.Avoid inorganic agent directly to spray leakage chemicals, cause the generation of leaking chemicals spontaneous combustion or explosion phenomenon.
In each embodiment above-mentioned, leakage treating device also comprises: for the sensor 68 of the treatment dosage in check processing agent storage tank 61, and sensor 68 is connected with control device 5 signal.Treatment dosage in real time reaction inorganic agent storage tank 61, reminds staff to supplement inorganic agent in time, is conducive to automatic management.
To be that hydrochloric acid and germanium tetrahydride are described in detail to chemical leakage treatment system provided by the invention below with chemicals:
When chemicals is hydrochloric acid, as shown in Figure 2, arrangement for detecting 4 detection of chemicals cabinet 1 internal leakage situation, when the chemical leakage amount received is more than or equal to the first setting value and is less than the second setting value, control the second control valve 72 and the 3rd control valve 73 is closed, the first control valve 71 and warning device 64 are reported to the police, notify that operator on duty checks whether chemicals cabinet leaks again, when the chemical leakage amount received is more than or equal to the second setting value, control the second control valve 72 to close, first control valve 71 and the 4th control valve 74 are opened, hydrochloric acid after process is discharged from leakage discharge pipe 3, hydrochloric acid in chemicals cabinet 1 is transported in stand-by storage 66 simultaneously, meanwhile control the 3rd control valve 73 to open, running water or limewash are sprayed in chemicals cabinet 1, until when the chemical leakage amount received is less than the first setting value, control the 3rd control valve 73 to close, after discharge leakage chemicals is clean, chemicals cabinet is opened by operating personnel, detect leakaging cause.
When chemicals is germanium tetrahydride, germanium tetrahydride is a kind of gas of colourless tool acid, the similar arsenic hydride of poisoning symptom, exposing to the open air several minutes just can be fatal at below concentration 250ppm, symptom comprises leukaemia, anaemia, blood urine, oliguria, jaundice, kidney failure, destruction nervous system, toxicity tic and death etc., and there is combustibility, likely cause and burn.Conventional leak is generally intensified ventilation, dresses protective garment and processes.As shown in Figure 3, arrangement for detecting 4 detection of chemicals cabinet 1 internal leakage situation, when the chemical leakage amount received is more than or equal to the first setting value and is less than the second setting value, control that the second control valve 72, the 3rd control valve 73 and the 5th control valve 75 are closed, warning device 64 is reported to the police, notify that operator on duty checks whether chemicals cabinet leaks again, can first by common high wind system, partial compromise gas be extracted out; When the chemical leakage amount received is more than or equal to the second setting value, control the second control valve 72 and the 5th control valve 75 is closed, control the first control valve 71 and the 3rd control valve 73 is opened simultaneously, running water is sprayed in chemicals cabinet 1, until when the chemical leakage amount received is less than the first setting value, controls to close, waste liquid after process can be discharged from leakage discharge pipe 3, discharge totally, chemicals cabinet is opened by operating personnel, detects leakaging cause.Note, due to the gas that germanium tetrahydride is easy spontaneous combustion, therefore when spray water, water should be avoided directly to spray the 5th control valve 75 (i.e. gas vent), utilize spray head 62 to the bottom spray of the chemicals storage tank 11 of storage germanium tetrahydride to reduce the temperature in chemical storage tank 11.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a chemical leakage treatment system, comprise: for the chemicals cabinet of storage of chemical product, chemicals storage tank is provided with in described chemicals cabinet, for discharging the leakage discharge pipe of described chemicals cabinet internal leakage chemicals and the first output pipe for being exported by the chemicals in chemicals storage tank, and described leakage discharge pipe and described first output pipe are respectively equipped with the first control valve and the second control valve, it is characterized in that, also comprise:
Arrangement for detecting, for detecting the chemical leakage amount in described chemicals cabinet;
Leakage treating device, for spraying inorganic agent in described chemicals cabinet;
The control device be connected with described arrangement for detecting and described leakage treating device signal, for according to the comparative result of chemical leakage amount with setting threshold value, controls the open and close of described first control valve, the second control valve and leakage treating device.
2. chemical leakage treatment system as claimed in claim 1, it is characterized in that, described leakage treating device comprises:
Inorganic agent storage tank;
Be arranged at the multiple spray heads in described chemicals cabinet;
For the second output pipe that described multiple spray head is communicated with described inorganic agent storage tank;
Be arranged at the 3rd control valve on described second output pipe, described 3rd control valve is connected with described control device signal, described control device is further used for, according to the comparative result of chemical leakage amount with setting threshold value, controlling the open and close of described 3rd control valve.
3. chemical leakage treatment system as claimed in claim 2, is characterized in that, described control device specifically for:
When the chemical leakage amount received is more than or equal to the first setting value, control that described second control valve is closed, described first control valve and the 3rd control valve are opened until when the chemical leakage amount that receives is less than the first setting value, controls described 3rd control valve and close.
4. chemical leakage treatment system as claimed in claim 2, is characterized in that, also comprise: the warning device be connected with described control device signal;
Described control device is further used for:
When the chemical leakage amount received is more than or equal to the first setting value and is less than the second setting value, control described second control valve and the closedown of the 3rd control valve, the first control valve unlatching and warning device warning;
When the chemical leakage amount received is more than or equal to the second setting value, control that described second control valve is closed, described first control valve and the 3rd control valve are opened until when the chemical leakage amount that receives is less than the first setting value, controls described 3rd control valve and close.
5. chemical leakage treatment system as claimed in claim 4, it is characterized in that, described warning device is buzzer or signal lamp.
6. chemical leakage treatment system as claimed in claim 4, it is characterized in that, when the inorganic agent in described leakage treating device is liquid, described leakage treating device also comprises: be arranged at the delivery pump be connected on described second output pipe, with described control device signal, when described control device is also for being more than or equal to the second setting value according to the chemical leakage amount received, controls described delivery pump and opening.
7. chemical leakage treatment system as claimed in claim 4, it is characterized in that, when the inorganic agent in described leakage treating device is liquid, described chemical leakage treatment system also comprises:
Stand-by storage, described stand-by storage is communicated with the chemicals storage tank in described chemicals cabinet by the 3rd output pipe;
Be arranged at the 4th control valve on described 3rd output pipe, described 4th control valve is connected with described control device signal, described control device also for: when the chemical leakage amount received is more than or equal to the second setting value, control described 4th control valve to open, the chemicals in described chemicals storage tank is transported to described stand-by storage by the 3rd output pipe.
8. chemical leakage treatment system as claimed in claim 4, it is characterized in that, when the inorganic agent in described leakage treating device is pyrophoric gas, described chemical storage tank is provided with outlet, and described outlet is communicated with by the 5th control valve with one end of described first output pipe.
9. chemical leakage treatment system as claimed in claim 8, it is characterized in that, the setting position of described multiple spray head is away from described 5th control valve.
10. the chemical leakage treatment system as described in any one of claim 2 ~ 9, it is characterized in that, described leakage treating device also comprises: for detecting the sensor of the treatment dosage in described inorganic agent storage tank, described sensor is connected with described control device signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510166049.9A CN104771850A (en) | 2015-04-09 | 2015-04-09 | Chemical leakage treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510166049.9A CN104771850A (en) | 2015-04-09 | 2015-04-09 | Chemical leakage treatment system |
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| CN104771850A true CN104771850A (en) | 2015-07-15 |
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| CN201510166049.9A Pending CN104771850A (en) | 2015-04-09 | 2015-04-09 | Chemical leakage treatment system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105999580A (en) * | 2016-08-12 | 2016-10-12 | 安徽中杰信息科技有限公司 | Systemic chemical leakage detection and remedy method |
| CN109854474A (en) * | 2019-02-28 | 2019-06-07 | 江苏顺丰化工有限公司 | A kind of liquid hazardous chemical injection device |
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| CN202834752U (en) * | 2012-08-02 | 2013-03-27 | 上海晶玺电子科技有限公司 | Safe conveying system for dangerous gases |
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| US6192854B1 (en) * | 1998-12-28 | 2001-02-27 | Robert Bosch Gmbh | Device for measuring the mass of a flowing medium |
| KR20030049130A (en) * | 2001-12-14 | 2003-06-25 | 엘지전자 주식회사 | leak inspection device and methode of secondary battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105999580A (en) * | 2016-08-12 | 2016-10-12 | 安徽中杰信息科技有限公司 | Systemic chemical leakage detection and remedy method |
| CN109854474A (en) * | 2019-02-28 | 2019-06-07 | 江苏顺丰化工有限公司 | A kind of liquid hazardous chemical injection device |
| CN109854474B (en) * | 2019-02-28 | 2020-02-04 | 江苏顺丰化工有限公司 | Liquid dangerous chemical injection device |
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Application publication date: 20150715 |