CN215004957U - Control circuit and device for prolonging service life of online detection instrument - Google Patents
Control circuit and device for prolonging service life of online detection instrument Download PDFInfo
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- CN215004957U CN215004957U CN202022971519.8U CN202022971519U CN215004957U CN 215004957 U CN215004957 U CN 215004957U CN 202022971519 U CN202022971519 U CN 202022971519U CN 215004957 U CN215004957 U CN 215004957U
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Abstract
The utility model discloses a control circuit and a device for prolonging the service life of an online detection instrument, which comprises a switching control circuit, a manual mode circuit, an automatic mode circuit and an indication circuit; the switching control circuit is connected with the indicating circuit in parallel, and the manual mode circuit and the automatic mode circuit are connected in parallel and then connected with the switching control circuit in parallel to form a branch circuit. The utility model has the advantages that: the air inlet electromagnetic valve, the air purifier, the air pump, the instrument air bin and the air outlet electromagnetic valve are connected through pipelines, the on-line continuous operation and the air exhaust 'measurement-cleaning-stopping' circulation operation mode of the on-line instrument are realized through the switching of circuits, and the consumption of photoelectric substances in the photoelectrochemical instrument can be greatly reduced through the circulation operation mode, so that the service life of the on-line instrument is prolonged.
Description
Technical Field
The utility model relates to a technical field that environmental protection air purification detected especially relates to an extension on-line measuring instrument life's control circuit and applied control circuit's device.
Background
In recent years, in the field of air purification engineering, in order to accurately know whether project operation meets the standard, a third-party detection unit is requested to perform sampling detection and provide a detection report, and besides, the installation of an online detection instrument is one of the most common means. The service life of the photoelectric detection instrument is generally 1.5 to 3 years, but the photoelectric detection instrument is used online in sewage plants, refuse landfill plants and other environments with poor air quality, the service life of the photoelectric detection instrument is greatly shortened, and the cost for purchasing the instrument is greatly increased.
SUMMERY OF THE UTILITY MODEL
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the invention.
In view of the above existing problems, the present invention is provided.
Therefore, the utility model provides a technical problem be: a control circuit is provided to realize switching of circuit modes.
In order to solve the technical problem, the utility model provides a following technical scheme: a control circuit for prolonging the service life of an online detection instrument comprises a switching control circuit, a manual mode circuit, an automatic mode circuit and an indication circuit; the switching control circuit is connected with the indicating circuit in parallel, and the manual mode circuit and the automatic mode circuit are connected in parallel and then connected with the switching control circuit in parallel to form a branch circuit.
As an extension on-line measuring instrument life's a preferred scheme of control circuit, wherein: the switching control circuit comprises a manual/stop/automatic linkage switch W1, a stop button SP, a start button ST, an intermediate relay KA1 and a normally open contact KA1, wherein the manual/stop/automatic linkage switch, the stop button SP, the start button ST and the intermediate relay KA1 are sequentially connected in series.
As an extension on-line measuring instrument life's a preferred scheme of control circuit, wherein: the manual mode circuit and the automatic mode circuit are connected in parallel and then are connected in parallel with the switching control circuit through a manual/stop/automatic linkage switch W2, the manual mode circuit is connected with the manual linkage switch, and the automatic mode circuit is connected with the automatic linkage switch.
As an extension on-line measuring instrument life's a preferred scheme of control circuit, wherein: the stop link switch of the manual/stop/automatic link switch W2 is linked with the stop link switch of the manual/stop/automatic link switch W1.
As an extension on-line measuring instrument life's a preferred scheme of control circuit, wherein: the automatic mode circuit comprises the following branches arranged in parallel: an intermediate relay KA 2; a time relay KT1 is serially connected behind the normally open contact KA 2; a time relay KT2 is serially connected behind the normally open contact KT 1; a normally open contact KT2 is connected in series with an online instrument YB; the air pump QB is arranged behind the normally open contact KT1 in parallel; an air outlet solenoid valve DCF 2; a normally open contact KT2 and a normally closed contact KA2 are connected in parallel and then are connected in series with an air inlet/purified air electromagnetic valve DCF1, and the branch is arranged in parallel behind the normally open contact KT 2; and the meter working indicator lamp GE2 is connected in parallel behind the normally open contact KT 2.
As an extension on-line measuring instrument life's a preferred scheme of control circuit, wherein: the manual mode circuit comprises an air outlet solenoid valve DCF2, and an air solenoid valve DCF2 is connected with the air pump QB in parallel; the air outlet electromagnetic valve DCF2 is connected in series with the manual linkage switch of the automatic/stop linkage switch W2.
As an extension on-line measuring instrument life's a preferred scheme of control circuit, wherein: the indicating circuit comprises the following branches which are connected with the switching control circuit in parallel: the normally closed contact KA1 is connected in series with a stop indicator lamp RE; the normally open contact KA2 is connected in series with an operation indicator lamp GE 1; wherein the normally closed contact KA1 and the normally open contact KA2 are disposed in parallel before the manual/stop/automatic linked switch W1 element.
As an extension on-line measuring instrument life's a preferred scheme of control circuit, wherein: the fuse FU is connected in series in the loop of the control circuit.
The utility model provides a another technical problem be: the device is provided for solving the problem of short online service life of the online instrument in sewage plants, refuse landfill plants and other environments with poor air quality.
In order to solve the technical problem, the utility model provides a following technical scheme: a device for prolonging the service life of an on-line detection instrument comprises a control circuit and a connecting pipeline of the detection instrument; the device can connect the online detection instrument with the pipeline to be detected through the connecting pipeline, and can switch the operation mode through the switching of the control circuit.
As an extension on-line measuring instrument life's a preferred scheme of device, wherein: the connecting pipeline comprises a hose, an air inlet/purified air switching electromagnetic valve, an air pump, a photoelectric instrument and an air outlet electromagnetic valve which are connected in sequence; the hose with the solenoid valve of giving vent to anger with the pipe connection that awaits measuring, just it still is connected with air purifier to admit air/purify gas switching solenoid valve.
The utility model has the advantages that: the air inlet electromagnetic valve, the air purifier, the air pump, the instrument air bin and the air outlet electromagnetic valve are connected through pipelines, the on-line continuous operation and the air exhaust 'measurement-cleaning-stopping' circulation operation mode of the on-line instrument are realized through the switching of circuits, and the consumption of photoelectric substances in the photoelectrochemical instrument can be greatly reduced through the circulation operation mode, so that the service life of the on-line instrument is prolonged.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be 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 some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor. Wherein:
FIG. 1 is a schematic diagram of a control circuit of the device for prolonging the service life of an online detection instrument;
fig. 2 is a schematic diagram of the instrument connection mode of the device for prolonging the service life of the online detection instrument.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below, and it is obvious that 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 having ordinary skill in the art without creative efforts shall belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, the references herein to "one embodiment" or "an embodiment" refer to a particular feature, structure, or characteristic that may be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
The present invention will be described in detail with reference to the drawings, and in order to describe the embodiments of the present invention in detail, the cross-sectional view showing the structure of the device will not be enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Meanwhile, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" and the like are based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms first, second, or third are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The terms "mounted, connected and connected" in the present application are to be understood broadly, unless otherwise explicitly stated or limited, for example: can be fixedly connected, detachably connected or integrally connected; they may be mechanically, electrically, or directly connected, or indirectly connected through intervening media, or 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.
Example 1
Referring to the schematic diagram of fig. 1, which is a schematic diagram of a control circuit of a device for prolonging the service life of an online detection instrument, in order to solve the problem that the online detection instrument is used online in environments with poor air quality such as sewage plants and refuse landfill plants and has a short service life, in the present embodiment, in the engineering practice of the sewage plants and the refuse landfill plants, a control circuit for prolonging the service life of the online detection instrument is provided, and the control circuit comprises a switching control circuit, a manual mode circuit, an automatic mode circuit and an indication circuit. Specifically, the switching control circuit is connected in parallel with the indicating circuit, and the manual mode circuit and the automatic mode circuit are connected in parallel and then connected in parallel with the switching control circuit to form a branch circuit.
It should be noted that, for example, the intermediate relay KA1(5), where the intermediate relay KA1 is a device name, and in order to distinguish a reference numeral from a name after brackets are removed in the specification, a "-" is used in this embodiment to distinguish, that is, the intermediate relay KA1-5, and the following reference numerals are all applied to this explanation.
Further to the embodiment, the switching control circuit comprises a manual/stop/automatic linkage switch W1-4, a stop button SP1, a start button ST2 and an intermediate relay KA1-5 which are connected in series in sequence, and a normally open contact KA1-3 which is arranged in parallel with the start button ST 2.
The manual mode circuit and the automatic mode circuit are connected in parallel and then connected with the switching control circuit through a manual/stop/automatic linkage switch W2-24, the manual mode circuit is connected with the manual linkage switch, the automatic mode circuit is connected with the automatic linkage switch through a manual shifting mode, and the stop linkage switch of the manual/stop/automatic linkage switch W2-24 is linked with the stop linkage switch of the manual/stop/automatic linkage switch W1-4. The working mode of the manual/stop/automatic linkage switch W2-24 can be selected according to actual needs, thereby realizing the switching of the circuit.
Further, the automatic mode circuit comprises the following branches arranged in parallel:
an intermediate relay KA 2-6; a time relay KT1-8 is arranged behind the normally open contact KA2-7 in series; a time relay KT2-10 is arranged behind the normally open contact KT1-9 in series; a normally open contact KT1-11 is connected in series with an online instrument YB-12; the air pump QB-13 is arranged behind the normally open contact KT1-11 in parallel; the normally open contact KT2-15 is connected in parallel with the normally closed contact KA2-17 and then is connected in series with the air inlet/purified air electromagnetic valve DCF1-16, and the branch is arranged in parallel behind the normally open contact KT 1-11; the instrument work indicator lamp GE2-18 is connected in parallel behind the normally open contact KT 2-11. In order to prevent the manual operation, the time relay KT2-10 works to influence the continuous operation, 2 KTs 1, namely a normally open contact KT1-9 and a normally open contact KT1-11 are arranged.
Further, the manual mode circuit of the present embodiment includes an air outlet solenoid valve DCF2-14, and the air solenoid valve DCF2 is connected in parallel with the air pump QB; the air outlet electromagnetic valve DCF2-14 is connected in series with a manual linkage switch of the active/stop/automatic linkage switch W2-24. It should be understood that, in the present embodiment, the circuit structure of the manual mode circuit is only described herein for describing the connection structure thereof, during the operation, the manual mode circuit and the automatic mode circuit both share the stop linkage branch formed by the stop linkage switch of the manual/stop/automatic linkage switch W2-24 and the stop linkage switch of the manual/stop/automatic linkage switch W1-4 in linkage, and it is not difficult to find that, when switching to the manual mode circuit, the on-line meter YB-12, the air pump YB-13 and the air outlet solenoid valve DCF2-14 are directly powered and operated after the normally open contact KT 36-11 is arranged on the circuit structure of the on-line meter YB-12, the air pump QB-13 and the air outlet solenoid valve DCF 2-14.
Further, the indication circuit comprises the following branches arranged in parallel with the switching control circuit:
the normally closed contact KA1-19 is connected with a stop indicator lamp RE-20 in series; the normally open contact KA1-21 is connected in series with an operation indicator lamp GE 1-22; wherein the normally closed contact KA1-19 and the normally open contact KA1-21 are arranged in parallel before the element of the manual/stop/automatic linkage switch W1-4.
Preferably, in this embodiment, the fuse FU-23 is connected in series in a loop of the control circuit, where the fuse FU-23 is added to the control circuit for circuit safety, and when an overcurrent or a short circuit occurs in a component in the circuit, the circuit is powered off after the fuse FU-23 is fused, so as to achieve a protection effect.
The working principle of the device control circuit for prolonging the service life of the online detection instrument is as follows:
1. and (3) automatic working state:
when the manual/stop/automatic linkage switch W1-4 is dialed to an automatic working gear, the starting button ST-2 is pressed, the intermediate relay KA1-5 is electrified, and the normally open contact KA1-3 is closed, so that self-locking is realized; meanwhile, the normally closed contact KA1-19 is disconnected, and the stop indicator lamp RE-20 is powered off and extinguished; meanwhile, the normally open contact KA1-21 is closed, the operation indicator lamp GE1-22 is electrified and lightened, and the working operation state is displayed.
Meanwhile, after the manual/stop/automatic linkage switch W2-24 is dialed to be automatic, the intermediate relay KA2-6 is electrified, and the normally open contact KA2-7 is closed to electrify the cycle time relay KT 1-8; while the normally closed contact KA2-17 is open.
After the time relay KT1-8 is electrified, a normally open contact KT1-9 is closed to provide power for the time relay KT2-10 to work, and a normally open contact KT2-15 is closed; the normally open contact KT2-11 is closed and supplies power to the air pump QB-13 and the air outlet DCF2-14 of the online instrument YB-12; meanwhile, a closed normally open contact KT2-15 is used for providing power for an air inlet/purified air electromagnetic valve DCF1-16, and an online meter is used for online monitoring;
when the time set by the time relay KT2-10 is up, the normally open contact KT2-15 is disconnected, and the air inlet/purified air electromagnetic valve DCF1-16 is not supplied with power, and is automatically switched to a purified air end, so that clean air flushing of the online monitoring equipment is realized; when the running time of the cycle time relay KT1-8 is cut off and the on-line monitoring instrument enters a stop time period, the normally open contact KT1-9 and the normally open contact KT1-11 are disconnected, and the on-line monitoring instrument enters a stop working state; the instrument operation indicator lamp GE2-18 is an on-line instrument operation indicator, and the working time of the on-line instrument operation indicator is consistent with the operation time of a time relay KT 1-8; when one cycle period of the cycle time relay KT1-8 is finished, the on-line monitoring system starts the work of a new cycle again: measurement-flush-stop.
When a stop button SP-1 is pressed, the power supply of the intermediate relay KA1-5 is cut off, the self-locking function is invalid, the control system is powered off and stops working, meanwhile, the normally closed contact KA1-19 is closed again, the stop indicator lamp RE-20 is powered on and lightened, and the indication of working stop is given; meanwhile, the normally open contact KA1-21 is disconnected, and the operation indicator lamp GE1-22 is extinguished after power failure.
2. And (3) manual working state:
when the manual/stop/automatic linkage switch W2-4 is shifted to a manual working gear and the start button ST-2 is pressed, the intermediate relay KA1-5 is electrified, and meanwhile, the normally open contact KA1-3 is closed, self-locking is realized; meanwhile, the normally closed contact KA1-19 is disconnected, and the stop indicator lamp RE-20 is powered off and extinguished; meanwhile, the normally open contact KA1-21 is closed, the operation indicator lamp GE1-22 is electrified and lightened, and the working operation state is displayed.
Meanwhile, after the manual/stop/automatic linkage switch W2-24 is turned on manually, the power is directly supplied to the on-line instrument YB-12, the air pump QB-13 and the air outlet electromagnetic valve DCF2-14 for working; at the moment, the intermediate relay KA2-6 is in a non-electric state, so the normally closed contact KA2-17 is closed, the normally closed contact also supplies power to the air inlet/purified air electromagnetic valve DCF1-16, the online monitoring instrument is in a working state all the time, and the instrument operation indicator lamp GE2-18 is lighted all the time; the manual/stop/automatic switch W1-4 is stopped only when it is to be shifted to the stop position.
3. And (3) stopping working:
when the manual/stop/automatic linkage switch W2-24 is shifted to the stop, the whole control circuit is powered off, and the on-line instrument stops working.
The numbers and names of the circuit schematic diagrams related in the embodiment are as follows:
| numbering | Name (R) | Numbering | Name (R) |
| 1 | |
13 | |
| 2 | |
14 | Air outlet |
| 3 | Normally |
15 | Normally |
| 4 | Manual/stop/automatic linked |
16 | Intake/purge gas |
| 5 | |
17 | Normally closed |
| 6 | |
18 | Instrument work |
| 7 | Normally |
19 | Normally closed |
| 8 | |
20 | Stop |
| 9 | Normally |
21 | Normally |
| 10 | |
22 | Running |
| 11 | Normally |
23 | |
| 12 | On- |
24 | Manual/stop/automatic linked switch W2 |
By adopting the technical scheme of the embodiment, through the switching of the circuit, the following can be realized: the device is operated on line continuously when being operated manually; when the on-line instrument is started automatically, the cyclic operation mode of air suction, measurement, flushing and stopping is adopted, and the consumption of photoelectric substances in the photoelectrochemical instrument can be greatly reduced in a cyclic operation mode, so that the service life of the on-line instrument is prolonged.
Example 2
Referring to the schematic diagram of fig. 2, a device for prolonging the service life of an online detection meter is provided in a meter scene where the control circuit provided by the above embodiment is applied to a photoelectric principle for detection. Specifically, the device comprises a control circuit and a connecting pipeline of the detection instrument, the device can connect the online detection instrument with the pipeline 100 to be detected through the connecting pipeline, and the operation mode can be switched through the switching of the control circuit.
Further, the connection pipeline comprises a hose 200, an air inlet/purified air switching solenoid valve 300, an air pump 500, a photoelectric instrument 600 and an air outlet solenoid valve 700 which are connected in sequence; wherein the hose 200 and the air outlet solenoid valve 700 are connected to the pipe 100 to be tested, and the air inlet/purified air switching solenoid valve 300 is further connected to the air cleaner 400.
More specifically, in this embodiment, according to fig. 2, the pipe 100 to be tested, the intake/purified air switching solenoid valve 300, the air purifier 400, the air pump 500, the photoelectric instrument 600, and the air outlet solenoid valve 700 may be sequentially connected through a hose 200. Referring again to fig. 1, the electrical components are connected to form a control circuit.
The device is powered by 24V dc; the air inlet end is opened when the air inlet/purified air electromagnetic valve is electrified, and the purified air end is opened when the air inlet/purified air electromagnetic valve is powered off; the time relay KT1 is a cyclic operation time relay, and the operation set time of the time relay KT1 is greater than the set time of the time relay KT 2.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are to be considered as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, no further reference being made to any figure in the claims.
It should be further understood that the present invention is described through the embodiments, and the embodiments are only for providing clear and complete descriptions for the technical solutions proposed by the claims of the present invention, that is, explaining the claims, so when judging whether the technical solutions described in the present invention are disclosed sufficiently, the core meaning of the solution defined by the claims should be fully considered, and other technical problems unrelated to the solution of the core technical problems proposed by the embodiments are necessarily present in the description, and the corresponding technical features and technical solutions are not referred to the meanings of the embodiments, belong to unnecessary technical features, so the implicit disclosure can be referred to, and the skilled in the art can fully combine the prior art and the common general knowledge to implement, and therefore, there is no need to do any detailed description.
It should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a prolong on-line measuring instrument life's control circuit which characterized in that: the circuit comprises a switching control circuit, a manual mode circuit, an automatic mode circuit and an indicating circuit;
the switching control circuit is connected with the indicating circuit in parallel, and the manual mode circuit and the automatic mode circuit are connected in parallel and then connected with the switching control circuit in parallel to form a branch circuit.
2. The control circuit for extending the service life of an on-line measuring instrument as claimed in claim 1, wherein: the power supply part of the switching control circuit comprises a manual/stop/automatic linked switch W1(4), a stop button SP (1), a start button ST (2) and an intermediate relay KA1(5) which are sequentially connected in series, and a normally open contact KA1(3) which is connected with the start button ST (2) in parallel.
3. The control circuit for extending the service life of an on-line measuring instrument as claimed in claim 1 or 2, wherein: the manual mode circuit and the automatic mode circuit are connected in parallel and then connected with the switching control circuit in parallel through a manual/stop/automatic linkage switch W2(24), the manual mode circuit is connected with the manual linkage switch, and the automatic mode circuit is connected with the automatic linkage switch.
4. The control circuit for extending the service life of an on-line measuring instrument as claimed in claim 3, wherein: comprises a linkage branch which is simultaneously linked by a linkage switch of the manual/stop/automatic linkage switch W2(24) and a linkage switch of the manual/stop/automatic linkage switch W1 (4).
5. The control circuit for extending the service life of an on-line measuring instrument as recited in claim 4, wherein: the automatic mode circuit comprises the following branches arranged in parallel:
an intermediate relay KA2 (6);
a time relay KT1(8) is arranged behind the normally open contact KA2(7) in series;
a time relay KT2(10) is arranged behind the normally open contact KT1(9) in series;
a normally open contact KT2(11) is connected in series with an online instrument YB (12);
the air pump QB (13) is arranged behind the normally open contact KT2(11) in parallel;
a normally open contact KT3(15) and a normally closed contact KA2(17) are connected in parallel and then are connected in series with an air inlet/purified air electromagnetic valve DCF1(16), and the branch is arranged in parallel behind the normally open contact KT2 (11);
and the meter work indicator lamp GE2(18) is connected in parallel behind the normally open contact KT2 (11).
6. The control circuit for extending the service life of an on-line measuring instrument as recited in claim 5, wherein: the manual mode circuit comprises an outlet solenoid valve DCF2(14), the outlet solenoid valve DCF2(14) being connected in series with a manual gang switch of the stop/go automatic gang switch W2 (24); and an air outlet solenoid valve DCF2(14) is connected in parallel with an air pump QB (13) in the automatic mode circuit branch.
7. The control circuit for extending the service life of an on-line measuring instrument as claimed in claim 6, wherein: the indicating circuit comprises the following branches which are connected with the switching control circuit in parallel:
a normally closed contact KA1(19) is connected in series with a stop indicator lamp RE (20);
a normally open contact KA3(21) is connected in series with an operation indicator lamp GE1 (22);
wherein the normally closed contact KA1(19) and the normally open contact KA3(21) are disposed in parallel before the manual/stop/automatic gang switch W1(4) element.
8. The control circuit for extending the service life of an on-line measuring instrument as claimed in claim 7, wherein: a fuse FU (23) is connected in series in a loop of the control circuit.
9. The utility model provides an extension on-line measuring instrument life's device which characterized in that: the control circuit comprises the control circuit as claimed in claims 1-8, and a connection pipeline of a detection instrument;
the device can connect the online detection instrument with the pipeline (100) to be detected through the connecting pipeline, and can switch the operation mode through the switching of the control circuit.
10. The apparatus for extending the service life of an in-line meter according to claim 9, wherein: the connecting pipeline comprises a hose (200), an air inlet/purified air switching electromagnetic valve (300), an air pump (500), a photoelectric instrument (600) and an air outlet electromagnetic valve (700) which are connected in sequence;
the hose (200) with the solenoid valve of giving vent to anger (700) with the pipeline (100) that awaits measuring are connected, just admit air/purify gas and switch solenoid valve (300) and still be connected with air purifier (400).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022971519.8U CN215004957U (en) | 2020-12-13 | 2020-12-13 | Control circuit and device for prolonging service life of online detection instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022971519.8U CN215004957U (en) | 2020-12-13 | 2020-12-13 | Control circuit and device for prolonging service life of online detection instrument |
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| CN215004957U true CN215004957U (en) | 2021-12-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116243066A (en) * | 2022-09-09 | 2023-06-09 | 中核检修有限公司 | Portable two-way solenoid valve testing arrangement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116243066A (en) * | 2022-09-09 | 2023-06-09 | 中核检修有限公司 | Portable two-way solenoid valve testing arrangement |
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