CN214425682U - Laboratory gas circuit safety protection system - Google Patents
Laboratory gas circuit safety protection system Download PDFInfo
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- CN214425682U CN214425682U CN202120347176.XU CN202120347176U CN214425682U CN 214425682 U CN214425682 U CN 214425682U CN 202120347176 U CN202120347176 U CN 202120347176U CN 214425682 U CN214425682 U CN 214425682U
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Abstract
The utility model relates to the technical field of laboratory gas circuit design, in particular to a laboratory gas circuit safety protection system; the utility model provides a laboratory gas circuit safety protection system, wherein a gas switching valve, a primary air pressure gauge, a secondary pressure reducing valve, a secondary air pressure gauge and a tee joint are sequentially arranged on a gas transmission pipeline; the tee joint is positioned between the secondary air pressure meter and the branch pipeline, a third port of the tee joint is connected with the air extracting pump through a first pipe, and the first pipe is provided with a branch valve; the utility model is connected with an upper air exhaust branch on the gas transmission pipeline and is matched with the opening and closing of the branch valve, thereby being suitable for gas supply and subsequent cleaning and air exhaust, realizing the cleaning of residual gas in the gas transmission pipeline after the gas supply is finished and ensuring the purity of next ventilation gas; the one-way valve is further arranged, so that even if the user end forgets to close the air valve, the user end can be isolated by the one-way valve when the air extracting pump extracts air, the influence or damage to the instrument of the user end is avoided, and the safety is improved.
Description
Technical Field
The utility model relates to a laboratory gas circuit design technical field, concretely relates to laboratory gas circuit safety protection system.
Background
In the laboratory, a plurality of high-purity special gases are often used in some experiments and instruments, and each instrument or each gas using point is provided with an independent gas supply system and a high-pressure steel cylinder, so that the matching is inconvenient and uniform.
The patent number 201320036608.0 of the utility model discloses a laboratory high-purity gas circuit system device, which belongs to the field of gas supply systems and comprises a gas supply device, wherein the gas supply device is connected with a gas transmission pipeline, the gas transmission pipeline is respectively provided with a control valve, a pressure reduction valve and a barometer, the gas transmission pipeline is also provided with a plurality of branch pipelines, the branch pipelines are respectively provided with a gas valve and a terminal barometer, and the branch pipelines are respectively connected with a user end; the utility model realizes the centralized gas supply for each laboratory and experimental equipment through the branch pipe design;
however, the gas transmission pipeline of the device is used as a uniform gas transmission pipeline, gas residues used for the time exist in the gas transmission pipeline after each use, the gas is not processed, and if another gas is used for the next use, the gas output is polluted and the purity is reduced.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model discloses aim at overcomes the not enough of prior art existence, and provides laboratory gas circuit safety protection system.
(II) technical scheme
The laboratory gas path safety protection system comprises a gas supply device, the gas supply device is connected with one end of a gas transmission pipeline, the other end of the gas transmission pipeline is provided with a plurality of branch pipelines, gas valves and terminal barometers are arranged on the branch pipelines, the branch pipelines are respectively connected with a user end,
the gas transmission pipeline is sequentially provided with a gas switching valve, a primary air pressure meter, a secondary pressure reducing valve, a secondary air pressure meter and a tee joint; the tee joint is located between the secondary air pressure meter and the branch pipeline, a third port of the tee joint is connected with the air extracting pump through a first pipe, and the first pipe is provided with a branch valve.
Further, the gas supply device is a gas cylinder.
Furthermore, the gas transmission pipeline is connected with a gas supply device through an explosion-proof high-pressure hose.
Further, the air pump is a vacuum pump.
Further, the air pump is connected with the collecting bottle through a second pipe.
Furthermore, a one-way valve is further arranged on the branch pipeline and located between the terminal barometer and the user side.
Furthermore, the check valve controls the gas to be led into the user side in a one-way mode.
(III) advantageous effects
The utility model provides a laboratory gas circuit safety protection system, which is characterized in that an air exhaust branch is connected on a gas transmission pipeline and is matched with the opening and closing of a branch valve, so that the laboratory gas circuit safety protection system is suitable for gas supply and subsequent cleaning and air exhaust, realizes the cleaning of residual gas in the gas transmission pipeline after the gas supply is finished, and ensures the purity of next-time ventilation gas; the one-way valve is further arranged, so that even if the user end forgets to close the air valve, the user end can be isolated by the one-way valve when the air extracting pump extracts air, the influence or damage to the instrument of the user end is avoided, and the safety is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only for the purpose of the present invention, protecting some embodiments, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a block diagram of a prior art patent;
FIG. 2 is a block diagram of the present invention;
fig. 3 is an enlarged view of the check valve.
In the drawings, the components represented by the respective reference numerals are listed below:
1-an air supply device, 2-an explosion-proof high-pressure hose, 3-a gas switching valve, 4-a control valve, 5-a first-stage pressure reducing valve, 6-a first-stage barometer, 7-a gas transmission pipeline, 8-a second-stage pressure reducing valve, 9-a second-stage barometer, 10-a branch pipeline, 11-a gas valve, 12-a terminal barometer, 13-a user end, 14-a tee joint, 15-a first pipe, 16-an air pump, 17-a second pipe, 18-a collecting bottle, 19-a branch valve and 20-a one-way valve.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or positional relationship thereof is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Moreover, the terms "first," "second," and "third," if any, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A laboratory high-purity gas path system device in the prior art is shown in fig. 1 and comprises a gas supply device 1, wherein the gas supply device 1 is connected with a gas transmission pipeline 7, the gas transmission pipeline 7 is respectively provided with a control valve 4, a pressure reduction valve and a barometer, the gas transmission pipeline 7 is also provided with a plurality of branch pipelines 10, the branch pipelines 10 are respectively provided with a gas valve 11 and a terminal barometer 12, and the branch pipelines 10 are respectively connected with a user terminal 13;
the gas supply device 1 is a gas cylinder; the gas transmission pipeline 7 is connected with the gas supply device 1 through the explosion-proof high-pressure hose 2; the pressure reducing valve consists of a primary pressure reducing valve 5 and a secondary pressure reducing valve 8, and the barometer consists of a primary barometer 6 and a secondary barometer 9; and a gas switching valve 3 is arranged at the joint of the gas transmission pipeline 7 and the gas supply device 1.
Referring to fig. 2, the following is embodiment 1 of the present invention,
the laboratory gas circuit safety protection system comprises a gas supply device 1, wherein the gas supply device 1 is connected with one end of a gas transmission pipeline 7, the other end of the gas transmission pipeline 7 is connected with a plurality of branch pipelines 10, gas valves 11 and terminal barometers 12 are arranged on the branch pipelines 10, and the branch pipelines 10 are respectively connected with a user end 13; the gas transmission pipeline 7 is sequentially provided with a gas switching valve 3, a primary barometer 6, a secondary pressure reducing valve 8, a secondary barometer 9 and a tee joint 14; the tee joint 14 is positioned between the secondary barometer 9 and the branch pipeline 10, the third port of the tee joint 14 is connected with the air suction pump 16 through a first pipe 15, and the first pipe 15 is provided with a branch valve 19.
Wherein, the gas supply device 1 is a gas cylinder;
wherein, the gas transmission pipeline 7 is connected with the gas supply device 1 through the anti-explosion high-pressure hose 2.
When gas is supplied, the branch valve 19 is closed, the gas enters the gas transmission pipeline 7 from the gas supply device 1, the secondary pressure reducing valve 8 reduces the pressure of the gas, and the pressure of the reduced gas can be measured by the primary barometer 6 and the secondary barometer 9; the decompressed gas enters each branch pipeline 10, the corresponding gas valve 11 is adjusted according to the requirement of a user side, at the moment, the terminal barometer 12 measures the gas before use, and the gas can be used after entering the user side 13 after reaching the use standard; the gas switching valve 3 can change the gas supplied by the gas supply device 1 according to the requirement of the user end 13;
after the gas supply is finished, the gas valve 11 is closed, the switching valve 3 is switched to the non-gas-communication state, the branch valve 19 is opened, the gas pump 16 is started to pump gas, and residual gas in the gas transmission pipeline 7 is pumped out, so that the gas is prevented from being polluted and the purity is prevented from being reduced in the next gas supply;
the air pump 16 is suggested to adopt a vacuum pump, so that the air pumping effect is ensured; the air pump 16 is connected with the collecting bottle 18 through a second pipe 17, and residual gas is pumped into the collecting bottle 18, so that subsequent treatment is facilitated.
Referring to fig. 3, the following is embodiment 2 of the present invention,
on the basis of the embodiment 1, the branch pipe 10 is further provided with a check valve 20, and the check valve 20 is located between the terminal barometer 12 and the user terminal 13.
The check valve 20 controls the gas to be led into the user terminal 13 in one direction, so that even if the user terminal 13 forgets to close the gas valve 11, the check valve 20 will separate the user terminal 13 when the air pump 16 pumps air, thereby avoiding the influence or damage to the instruments of the user terminal 13 and improving the safety.
In the description herein, references to the description of the terms "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. A laboratory gas path safety protection system comprises a gas supply device (1), wherein the gas supply device (1) is connected with one end of a gas transmission pipeline (7), a plurality of branch pipelines (10) are arranged at the other end of the gas transmission pipeline (7), a gas valve (11) and a terminal barometer (12) are arranged on each branch pipeline (10), the branch pipelines (10) are respectively connected with a user end (13),
the gas transmission pipeline (7) is sequentially provided with a gas switching valve (3), a primary barometer (6), a secondary pressure reducing valve (8), a secondary barometer (9) and a tee joint (14); the tee joint (14) is located between the secondary barometer (9) and the branch pipeline (10), the third port of the tee joint (14) is connected with the air suction pump (16) through a first pipe (15), and the first pipe (15) is provided with a branch valve (19).
2. Laboratory gas circuit safety protection system according to claim 1, characterized in that the gas supply device (1) is a gas cylinder.
3. Laboratory gas circuit safety protection system according to claim 2, characterized in that the gas transmission line (7) is connected to the gas supply device (1) by means of an explosion-proof high-pressure hose (2).
4. Laboratory gas circuit safety protection system according to claim 1, characterized in that the suction pump (16) is a vacuum pump.
5. Laboratory air circuit safety protection system according to claim 1, characterized in that the suction pump (16) is connected with a collection bottle (18) by a second tube (17).
6. The laboratory air circuit safety protection system according to claim 1, wherein a check valve (20) is further disposed on the branch pipe (10), and the check valve (20) is located between the terminal barometer (12) and the user terminal (13).
7. The laboratory gas circuit safety protection system according to claim 6, wherein said one-way valve (20) controls the one-way passage of gas to the user terminal (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120347176.XU CN214425682U (en) | 2021-02-07 | 2021-02-07 | Laboratory gas circuit safety protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120347176.XU CN214425682U (en) | 2021-02-07 | 2021-02-07 | Laboratory gas circuit safety protection system |
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| Publication Number | Publication Date |
|---|---|
| CN214425682U true CN214425682U (en) | 2021-10-19 |
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| CN202120347176.XU Active CN214425682U (en) | 2021-02-07 | 2021-02-07 | Laboratory gas circuit safety protection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117398838A (en) * | 2023-10-16 | 2024-01-16 | 英德市西洲气体有限公司 | Multistage filtration's high-purity acetylene purification device |
-
2021
- 2021-02-07 CN CN202120347176.XU patent/CN214425682U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117398838A (en) * | 2023-10-16 | 2024-01-16 | 英德市西洲气体有限公司 | Multistage filtration's high-purity acetylene purification device |
| CN117398838B (en) * | 2023-10-16 | 2024-05-10 | 英德市西洲气体有限公司 | Multistage filtration's high-purity acetylene purification device |
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