CN218191439U - Purging box for laser gas analyzer - Google Patents

Abstract

The utility model belongs to the technical field of the process gas measurement technique and specifically relates to a sweep case for laser gas analysis appearance is related to, and it includes box, trunk line and a plurality of small transfer line, and the inside holding chamber that is provided with of box is used for holding trunk line and a plurality of small transfer line, has seted up the air inlet on the box, and the trunk line passes through the external air pump of air inlet intercommunication, and one side and a plurality of small transfer line that the air inlet was kept away from to the trunk line all communicate, have still seted up a plurality of gas outlets on the box, and the small transfer line corresponds the intercommunication gas outlet and is used for gaseous reposition of redundant personnel. This application has the effect that improves laser analyzer's detection precision.

Description

Purging box for laser gas analyzer

Technical Field

The application relates to the technical field of process gas measurement, in particular to a purging box for a laser gas analyzer.

Background

The working principle of measuring gas by the through laser analyzer is that the transmitting unit and the receiving unit are installed on the outer walls of two opposite sides of a pipeline, the laser wavelength emitted by the transmitting unit is tuned to have certain intensity, the laser wavelength is the absorption wavelength of the gas to be measured, the tuned laser passes through the gas to be measured, the intensity is reduced after the gas to be measured is absorbed, the tuned laser is received by the receiving unit on the other side, the concentration of the gas to be measured is higher, the smaller the received laser intensity is, and the concentration of the gas to be measured can be measured by analyzing the received laser intensity.

Can produce a large amount of harmful gas in petrochemical's production and processing process, among the correlation technique, adopt laser analyzer to detect the concentration of harmful gas that awaits measuring, laser gas analyzer's transmitting unit and receiving unit install on the pipeline relative both sides outer wall, between transmitting unit and the gas that awaits measuring, all install the lens between the gas receiving unit that awaits measuring, with reduce poisonous gas and transmitting unit that awaits measuring, receiving unit's contact, thereby reduce the corrosive action to the inside spare part of laser gas analyzer.

With respect to the related art among the above, there are the following drawbacks: the laser gas analyzer is installed in a severe industrial field environment, impurities such as oil stains and dust in the air are easily attached to lenses of the laser gas analyzer, the light transmittance is reduced, and even laser is completely blocked, so that the precision of the laser gas analyzer for detecting gas to be detected is reduced.

SUMMERY OF THE UTILITY MODEL

In order to improve laser analysis appearance's detection precision, this application provides a case that sweeps for laser gas analysis appearance.

The application provides a sweep case for laser gas analysis appearance adopts following technical scheme:

the utility model provides a case that sweeps for laser gas analysis appearance, includes box, trunk line and a plurality of small transfer line, the inside holding chamber that is provided with of box is used for holding trunk line and a plurality of small transfer line, the air inlet has been seted up on the box, the trunk line passes through the external air pump of air inlet intercommunication, one side and a plurality of small transfer line that the air inlet was kept away from to the trunk line all communicate, a plurality of gas outlets have still been seted up on the box, the small transfer line corresponds the intercommunication gas outlet and is used for gaseous reposition of redundant personnel.

By adopting the technical scheme, the box body can be fixed on other bearing objects including but not limited to a wall surface or a bracket, and the whole blowing box is kept stable. Be provided with trunk line and a plurality of spinal branch pipes in the inside of box, external air pump is gone into clean gas from the air inlet pump, and gas is shunted to a plurality of spinal branch pipes in from the trunk line, and the gas in the spinal branch pipe is pumped from the gas outlet that corresponds, and clean gas is sent into laser analyzer in, separates a wind wall between lens and the gaseous of awaiting measuring to the gaseous difficult pollution lens that awaits measuring.

Through increasing the case that sweeps, sweep the lens with clean gas, debris such as greasy dirt, dust in poisonous gas or the air that awaits measuring are difficult for the adhesion on the lens, the pollution of reducible camera lens to improve laser analyzer and detect gaseous precision.

Moreover, because under adverse operating mode environment such as high temperature and high humidity, the inside device of laser gas analysis appearance host computer need dispel the heat, sweeps the case through the increase, with inside clean gas pump income laser analysis appearance host computer, utilize the mobility of air to take away the heat, can play the purpose to the heat dissipation cooling of laser analysis appearance host computer.

Optionally, a clamping sleeve joint is arranged on the box body and detachably connected with the box body through an air inlet.

Through adopting above-mentioned technical scheme, the cutting ferrule connects can dismantle with the box and is connected, and external air pump accessible cutting ferrule connects and is connected with the box to the stability of external air pump and box connection has been improved, and the cutting ferrule connects can dismantle with the box and be connected, can conveniently change when the cutting ferrule connects the damage.

Optionally, one side of the ferrule connector, which is far away from the box body, is detachably connected with a connecting flange.

Through adopting above-mentioned technical scheme, flange is connected with one side that the box was kept away from to the cutting ferrule joint, and external air pump passes through flange and is connected with the box, has further improved the stability of external air pump with the box is connected, and has improved the seal, and gas in the external air pump can be steadily gone into to the trunk line in by the flange pump.

Optionally, a switch valve is arranged on the main pipeline and used for controlling the opening and closing of the main pipeline.

Through adopting above-mentioned technical scheme, the ooff valve sets up on the trunk line, can conveniently open or close the trunk line through the ooff valve to whether control gas enters into a plurality of small transfer lines through the trunk line in, thereby realize the real time control to gas.

Optionally, a filtering and pressure reducing valve is further arranged on the main pipeline and located on one side, far away from the air inlet, of the switch valve.

Through adopting above-mentioned technical scheme, filtering and pressure reducing valve sets up on the trunk line, and after the switch valve was opened, gaseous from filtering and pressure reducing valve passed through. Because laser gas analyzer installs in abominable industrial field environment, filter the effect that the relief pressure valve can carry out the filtration to gas, filter the impurity in the air, further improve gaseous cleanliness factor.

And through setting up the filtering pressure reducing valve, can play the effect of decompression, make the gaseous pressure of access reduce in the external air pump, keep the stability of gaseous pressure, can avoid as far as possible because the too big damage to the equipment of box inside of pressure.

Optionally, the main pipeline is provided with a gas distribution block, and the branch pipelines are communicated with the main pipeline by being connected with the gas distribution block.

Through adopting above-mentioned technical scheme, gaseous in the trunk line enters into each lateral conduit again after passing through the branch gas piece earlier, has improved the stability of gaseous reposition of redundant personnel, and through trunk line and branch gas piece intercommunication, divide gas piece and each lateral conduit intercommunication, has improved the stability of connecting, makes gaseous in the trunk line can stably enter into each lateral conduit in.

Optionally, one side that the box was kept away from to the gas distribution piece is provided with a plurality of rotameter, the small transfer line is through being connected with rotameter and communicate with the trunk line.

Through adopting above-mentioned technical scheme, all be provided with rotor flow meter at each branch pipeline and the junction of dividing the gas piece, control the gas flow that the reposition of redundant personnel entered into in the branch pipeline once more through rotor flow meter to adjust the size of air current, can reach the effect of controlling the air current in each way branch pipeline alone, thereby improve the convenience of operation.

Optionally, a switch board is arranged on the box body, and the switch board is rotatably connected with the box body and used for closing the accommodating cavity.

Through adopting above-mentioned technical scheme, because laser gas analyzer installs in abominable industrial field environment, the switch board rotates to be connected on the box and control the switching in holding chamber to debris such as greasy dirt, dust in the reduction air enter into the box inside to the corrosive action of trunk line and branch pipeline, reduce the clean cost that sweeps the case, improve the life who sweeps the case.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by adding the purging box and purging the lens with clean gas, toxic gas to be detected or impurities such as oil stain, dust and the like in the air are not easy to adhere to the lens, so that the pollution of a lens can be reduced, and the gas detection precision of the laser analyzer is improved;

2. because the laser gas analyzer is installed in a severe industrial field environment, and the filtering pressure reducing valve is arranged, when the switch valve is opened, gas passes through the filtering pressure reducing valve, the filtering pressure reducing valve can filter the gas, impurities in the air are filtered, and the cleanliness of the gas is further improved;

3. under adverse operating mode environment such as high temperature and high humidity, the inside device of laser gas analysis appearance host computer need dispel the heat, sweeps the case through the increase, with inside clean gas pump goes into the laser analysis appearance host computer, utilizes the mobility of air to take away the heat, can play the purpose to the heat dissipation cooling of laser analysis appearance host computer.

Drawings

Fig. 1 is a schematic view of the entire configuration of a purge tank for a laser gas analyzer according to embodiment 1 of the present application.

Fig. 2 is a partial structural schematic view of a purge tank for a laser gas analyzer according to embodiment 1 of the present application.

Fig. 3 is a sectional view of the gas distribution block of embodiment 1 of the present application.

Fig. 4 is a schematic view of the entire structure of a purge tank for a laser gas analyzer according to embodiment 2 of the present application.

Description of the reference numerals: 1. a box body; 11. an accommodating cavity; 12. an air inlet; 13. an air outlet; 14. a ferrule fitting; 15. a connecting flange; 16. a switch plate; 2. a main pipeline; 21. an on-off valve; 3. a pipeline is branched; 4. a filtering pressure reducing valve; 5. a gas distribution block; 6. a rotameter.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a case that sweeps for laser gas analysis appearance.

Example 1

Referring to fig. 1 and 2, a case that sweeps for laser gas analysis appearance includes box 1, and box 1 can be fixed including but not limited to wall or other load-bearing objects such as support on box 1 integrated into one piece has air inlet 12 and a plurality of gas outlet 13, and holding chamber 11 has been seted up to box 1 inside, and holding chamber 11 is used for holding main pipe 2 and a plurality of pipeline 3 of box 1 internal connection. In the present embodiment, the number of branch ducts 3 is set to four, and may be set to another number in other embodiments.

External air pump passes through threaded connection on air inlet 12, in pumping external clean air current into main pipeline 2, the air current reposition of redundant personnel of main pipeline 2 is to four spinal branch pipes 3, spinal branch pipe 3 and 13 one-to-one in the gas outlet, pump external air current out from gas outlet 13, thereby clean air current is sent into in the laser analysis appearance, separate out one wind wall between lens and the gas that awaits measuring, make the greasy dirt in the gas or the air that awaits measuring, thereby debris such as dust are difficult for the adhesion pollute the lens on the camera lens, thereby improve the gaseous precision of laser analysis appearance detection awaiting measuring.

And because the laser gas analyzer is often installed in harsh industrial field environments such as high temperature and high humidity, the devices inside the laser gas analyzer host need to dissipate heat, and clean gas in the purging box can be pumped into the laser analyzer host, so that the heat is taken away by utilizing the fluidity of the air, and the temperature inside the laser analyzer host is reduced.

Referring to fig. 1 and 2, in order to improve the stability of connection between the external air pump and the box body 1, a cutting ferrule connector 14 is in threaded connection with the air inlet 12 of the box body 1, the external air pump is connected with the box body 1 more stably through threaded connection on the cutting ferrule connector 14, and the cutting ferrule connector 14 can be conveniently replaced when the cutting ferrule connector 14 is damaged.

In order to further improve the stability of connection between the external air pump and the box body 1, a connecting flange 15 is in threaded connection with one side, far away from the box body 1, of the clamping sleeve joint 14, the external air pump is connected to the connecting flange 15 through bolts and then connected with the box body 1, the stability of connection between the external air pump and the box body 1 can be improved, and the air tightness is improved.

In order to conveniently control whether the external air enters the branch pipelines 3 through the main pipeline 2, the main pipeline 2 is in threaded connection with a switch valve 21, and when the switch valve 21 is opened, the external air can enter the branch pipelines 3 through the main pipeline 2; when the switch valve 21 is closed, the external air flow cannot pass through the main pipeline 2, so that the real-time control of the air flow is realized.

Referring to fig. 2, still install filtering and pressure reducing valve 4 on main pipeline 2, filtering and pressure reducing valve 4 is located the one side that air inlet 12 was kept away from to ooff valve 21, and when opening ooff valve 21, external air current passes through from filtering and pressure reducing valve 4, and filtering and pressure reducing valve 4 can carry out once filtration to the air in the external air current, reduces the impurity in the air current, improves the cleanliness factor of being sent into gas among the laser analyzer.

The filtering and pressure reducing valve 4 can also play a role in reducing the pressure of the air flow, when the pressure of the external air flow is too high, the filtering and pressure reducing valve 4 can reduce the pressure, so that the pressure of the air is kept stable, and the damage of the too high pressure to the pipeline in the box body 1 is avoided as much as possible.

Referring to fig. 2 and 3, in order to divide the gaseous stable reposition of redundant personnel, be provided with branch gas piece 5 in the one end that main pipe 2 kept away from air inlet 12, divide gas piece 5 and box 1 bolted connection, main pipe 2 stretches into in dividing gas piece 5, divides many air flues in the gas piece 5 to divide gas reposition of redundant personnel, divides gas piece 5 to be connected with each small transfer line 3, through having increased branch gas piece 5, can make the gaseous stability in the main pipe 2 enter into each small transfer line 3.

Referring to fig. 2, in order to further adjust the gas flow entering each branch pipe 3 once, a rotameter 6 is installed on each branch pipe 3, the gas flow entering the branch pipe 3 by shunting is controlled by the rotameter 6, the size of the gas flow entering each branch pipe 3 can be adjusted, and the convenience of operation is improved.

Because the laser analyzer is installed in abominable industrial field environment, articulated on box 1 have switch board 16, switch board 16 rotates with box 1 to be connected, can open or closed holding chamber 11, reduces debris such as greasy dirt, dust in the air and enters into box 1 inside to trunk line 2, branch pipeline 3, filtering and reducing valve 4 and flowmeter 6's corrosive action, reduces the clean cost of box 1 inner wall, can improve the life who sweeps incasement plumbing equipment.

The implementation principle of the embodiment 1 is as follows:

the connecting flange 15 is connected with an external air pump, the switch valve 21 is opened, the pressure of gas is adjusted through the filter pressure reducing valve 4, the flow of the gas in the four branch pipelines 3 is adjusted through the rotor flow meter 6, the divided gas flow is sent into the laser analyzer through the external pipeline at the gas outlet 13, and a wind wall is separated between the lens and the gas to be measured, so that the pollution of the gas to be measured to the lens is reduced, and the measurement precision is improved.

Example 2

Referring to fig. 4, the present embodiment is different from embodiment 1 in that the number of branch ducts 3 is set to two and the number of air outlets 13 is set to two.

External air pump passes through threaded connection on air inlet 12, in pumping external clean air current main pipeline 2, the air current reposition of redundant personnel of main pipeline 2 is to two spinal branch pipelines 3, spinal branch pipeline 3 and 13 one-to-one in the gas outlet, pump external air current out from gas outlet 13, thereby in clean air current is sent into laser analyzer, separate out one brattice between lens and the gas that awaits measuring, make the greasy dirt in the gas or the air that awaits measuring, thereby debris such as dust are difficult for the adhesion on the camera lens pollute the lens, thereby improve the precision that laser analyzer detected the gas that awaits measuring.

The implementation principle of the embodiment 2 is as follows:

connecting flange 15 connects external air pump, opens switch valve 21, adjusts gaseous pressure through filtering relief pressure valve 4, adjusts the gaseous flow size of reposition of redundant personnel to two lateral ducts 3 through rotameter 6, and during the external pipeline sent the air current of reposition of redundant personnel into laser analyzer in gas outlet 13 department, separated out a brattice between lens and the gas that awaits measuring to reduce the pollution of the gas that awaits measuring to the lens, improve measurement accuracy.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. A case that sweeps for laser gas analysis appearance which characterized in that: including box (1), trunk line (2) and a plurality of small transfer line way (3), box (1) inside is provided with holding chamber (11) and is used for holding trunk line (2) and a plurality of small transfer line way (3), air inlet (12) have been seted up on box (1), trunk line (2) are through the external air pump of air inlet (12) intercommunication, one side and a plurality of small transfer line way (3) of air inlet (12) are all linked together in trunk line (2), a plurality of gas outlets (13) have still been seted up on box (1), small transfer line way (3) correspond intercommunication gas outlet (13) and are used for gaseous reposition of redundant personnel.

2. A purge bin for a laser gas analyzer according to claim 1, wherein: the air inlet box is characterized in that a clamping sleeve joint (14) is arranged on the box body (1), and the clamping sleeve joint (14) is detachably connected with the box body (1) through an air inlet (12).

3. A purge bin for a laser gas analyzer as set forth in claim 2, wherein: one side of the clamping sleeve joint (14) far away from the box body (1) is detachably connected with a connecting flange (15).

4. A purge bin for a laser gas analyzer according to claim 1, wherein: be provided with ooff valve (21) on trunk line (2), ooff valve (21) are used for controlling the switching of trunk line (2).

5. A purge bin for a laser gas analyzer as set forth in claim 4, wherein: and a filtering and pressure reducing valve (4) is further arranged on the main pipeline (2), and the filtering and pressure reducing valve (4) is positioned on one side, far away from the air inlet (12), of the switch valve (21).

6. A purge bin for a laser gas analyzer as set forth in claim 5, wherein: be provided with branch gas piece (5) on trunk line (2), a plurality of branch pipeline (3) are through being connected and communicate with trunk line (2) with branch gas piece (5).

7. A purge bin for a laser gas analyzer as set forth in claim 6, wherein: one side that box (1) was kept away from in gas distribution piece (5) is provided with a plurality of rotameter (6), lateral conduit (3) are through being connected with rotameter (6) and communicate with trunk line (2).

8. A purge bin for a laser gas analyzer according to claim 1, wherein: the box body (1) is provided with a switch board (16), and the switch board (16) is rotatably connected with the box body (1) and used for closing the accommodating cavity (11).

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