CN210604076U

CN210604076U - Sampling disc

Info

Publication number: CN210604076U
Application number: CN201921349796.6U
Authority: CN
Inventors: 胡文正
Original assignee: Shenzhen Hengfusheng Technology Co Ltd
Current assignee: Shenzhen Hengfusheng Technology Co Ltd
Priority date: 2019-08-19
Filing date: 2019-08-19
Publication date: 2020-05-22
Anticipated expiration: 2029-08-19

Abstract

The utility model discloses a sampling disc, which comprises a case and a clapboard joint arranged outside the case, wherein the clapboard joint is connected with an inspection instrument; the machine case is internally provided with a checking pipeline, a cleaning pipeline and a three-way valve, wherein the three-way valve is respectively connected with the checking pipeline, the cleaning pipeline and the partition plate joint. The utility model integrates the cleaning pipeline and the checking pipeline inside the case by adopting the case structure, thereby realizing multifunctional integrated design, being beneficial to reducing the volume of the whole structure and facilitating integrated transportation; the pipeline detection is realized by adopting a checking pipeline; through setting up clean pipeline, can be used for cleaning the gas that gets into the baffle joint, can realize cleaning the check pipeline simultaneously, realize purifying the pipeline and filter the effect of purifying the gas.

Description

Sampling disc

Technical Field

The utility model relates to a gas monitoring field, in particular to sampling dish.

Background

Volatile Organic Compounds (VOCs) refer to organic compounds having a saturated vapor pressure of more than 133.32Pa at normal temperature, a boiling point of 50-260 ℃ below under a standard atmospheric pressure of 101.3kPa, and an initial boiling point of 250 ℃, or any organic solid or liquid that can be volatilized at normal temperature and pressure.

The existing sampling disc for detecting the volatile organic compounds is an integrated sampling disc with an independent box structure, and has the advantages of difficult operation of a connection mode, single function, large volume, large transportation difficulty, high cost, long production period and difficult operation of the connection mode.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sampling dish aims at improving the shortcoming of current volatile organic compounds sampling dish function singleness.

In order to achieve the purpose, the utility model provides a sampling disc, which comprises a case and a clapboard joint arranged outside the case, wherein the clapboard joint is connected with an inspection instrument;

the machine case is internally provided with a checking pipeline, a cleaning pipeline and a three-way valve, wherein the three-way valve is respectively connected with the checking pipeline, the cleaning pipeline and the partition plate joint.

Optionally, a vacuum pump is arranged in the case, and the vacuum pump is arranged between the partition plate joint and the three-way valve.

Optionally, the check pipeline includes a first electromagnetic valve, a flow meter and a second electromagnetic valve which are connected in sequence, and the second electromagnetic valve is connected with the partition joint through the three-way valve;

the vacuum pump is arranged between the second electromagnetic valve and the three-way valve.

Optionally, the checking pipeline is provided with a plurality of groups of first electromagnetic valves, and the plurality of groups of first electromagnetic valves are arranged in parallel.

Optionally, a first pressure regulating valve is arranged between the first electromagnetic valve and the flow meter.

Optionally, a relay is arranged inside the case, and the first electromagnetic valve, the second electromagnetic valve and the three-way valve are electrically connected with the relay respectively.

Optionally, the vacuum pump is electrically connected to the relay.

Optionally, the cleaning line comprises an air filter connected to the three-way valve.

Optionally, one end of the air filter, which is far away from the three-way valve, is provided with a dehydrator.

Optionally, a second pressure regulating valve is provided between the air filter and the three-way valve.

The technical scheme of the utility model integrates the cleaning pipeline and the checking pipeline inside the case by adopting the case structure, thereby realizing multifunctional integrated design, being beneficial to reducing the volume of the whole structure and facilitating integrated transportation; by adopting the checking pipeline, the pipeline air tightness detection of the checking instrument can be conveniently realized; through setting up clean pipeline, can be used for the gas that gets into baffle joint and inspection instrument to clean, can clean the check pipeline through clean pipeline simultaneously, realize the purifying effect of whole pipeline.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic view of an external structure of a chassis according to an embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of a chassis according to an embodiment of the present invention;

fig. 3 is a schematic view of an internal pipeline of the chassis according to an embodiment of the present invention;

fig. 4 is a schematic view of a checking state gas circuit of the checking pipeline in an embodiment of the present invention;

fig. 5 is a schematic view of a gas circuit for checking the cleanness status of an instrument according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a check pipeline blowback state gas circuit in an embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Cabinet	11	Partition plate joint
20	Check pipeline	21	First electromagnetic valve
				22	Second electromagnetic valve	23	Flow meter
24	First pressure regulating valve	30	Three-way valve
				40	Vacuum pump	50	Clean pipeline
51	Air filter	52	Water remover
				53	Second pressure regulating valve	60	Relay with a movable contact
70	Inspection instrument

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic diagram of an external structure of a chassis according to an embodiment of the present invention, fig. 2 is a schematic diagram of an internal structure of the chassis according to an embodiment of the present invention, and fig. 3 is a schematic diagram of an internal pipeline of the chassis according to an embodiment of the present invention; the utility model provides a sampling disc, which comprises a case 10 and a clapboard joint 11 arranged outside the case 10, wherein the clapboard joint 11 is connected with an inspection instrument 70; the cabinet 10 is provided with a checking pipeline 20, a cleaning pipeline 50 and a three-way valve 30 inside, and the three-way valve 30 is respectively connected with the checking pipeline 20, the cleaning pipeline 50 and the partition joint 11.

Please refer to fig. 4, fig. 4 is a schematic diagram of a checking state gas circuit of a checking pipeline in an embodiment of the present invention, when the checking pipeline is used for sampling, the three-way valve 30 is closed to connect one end of the cleaning pipeline 50, gas sequentially passes through the checking pipeline 20, the three-way valve 30 and the partition joint 11 to enter the checking instrument 70, and the checking pipeline 20 delivers gas to the checking instrument 70, so that the gas tightness of the pipeline of the checking instrument 70 can be detected.

Please refer to fig. 5, fig. 5 is a schematic diagram of a clean state gas path of an inspection instrument according to an embodiment of the present invention, when the inspection instrument 70 is cleaned, the three-way valve 30 is closed to connect one end of the inspection pipeline 20, gas passes through the cleaning pipeline 50, the three-way valve 30 and the partition joint 11 sequentially to enter the inspection instrument 70, and the inspection instrument 70 can be cleaned by inputting dry and clean gas. Gas may be pumped into the audit tube 20 by a gas pump.

Please refer to fig. 6, fig. 6 is a schematic diagram of a checking pipeline blowback state gas circuit in an embodiment of the present invention, when the checking pipeline 20 is cleaned, the three-way valve 30 is closed to connect one end of the partition joint 11, dry clean gas is input from the clean pipeline 50, and the gas sequentially passes through the clean pipeline 50 and the three-way valve 30 to enter the checking pipeline 20, so as to clean the checking pipeline 20. Dry clean gas may be pumped into the clean line 50 by a gas pump.

By integrating the above-described cleaning duct 50 and the checking duct 20 inside the cabinet 10, an integrated design of the ducts can be facilitated.

By adopting the checking pipeline 20, gas can be input into the checking instrument 70 through the checking pipeline 20 for detecting the air tightness of the checking instrument 70, so that the problem that the detection result is influenced by the air tightness problem of the checking instrument 70 is avoided.

Because the checking pipeline 20 is connected with the cleaning pipeline 50, when dry and clean gas is input into the checking pipeline 20 through the cleaning pipeline 50, the checking pipeline 20 can be cleaned, and the problem that the sampling result is influenced because impurities exist in the checking pipeline 20 is avoided.

Because the cleaning pipeline 50 is connected with the inspection instrument 70, when sampling inspection is not needed, dry and clean gas can be conveyed to the inspection instrument 70 through the cleaning pipeline 50, and the dry and clean gas enters the inspection instrument 70 through the partition joint 11, so that the partition joint 11 and the inspection instrument 70 are purified, the service performance of the inspection instrument 70 is ensured, and the inspection result precision is higher.

The utility model discloses an adopt three-way valve 30 to connect check pipeline 20, clean pipeline 50 with the baffle connects 11, can realize the design that integrates of above-mentioned structure, simultaneously, can be when needs, regularly purification treatment to check pipeline 20 and baffle connect 11, makes inspection instrument 70 and baffle connect 11 to keep good clean state, and then can help making it keep good performance.

The cleaning pipeline 50 may adopt a Compressed Dry Air (CDA) inlet pipeline, and pipeline cleaning is performed on the pipeline by using the CDA; other gases may also be used for pipeline cleaning.

In order to improve the gas transmission efficiency, a vacuum pump 40 is optionally disposed in the housing 10, and the vacuum pump 40 is disposed between the partition joint 11 and the three-way valve 30. When the vacuum pump 40 is operated, the vacuum pump 40 pumps gas into the diaphragm joint 11 via the three-way valve 30, so that efficient gas input is achieved.

Referring to fig. 3, 4, 5 and 6, in an embodiment of the present invention, the checking pipeline 20 includes a first electromagnetic valve 21, a flowmeter 23 and a second electromagnetic valve 22 connected in sequence, and the second electromagnetic valve 22 is connected to the partition joint 11 through the three-way valve 30; the vacuum pump 40 is provided between the second solenoid valve 22 and the three-way valve 30.

When the vacuum pump 40 is operated, a negative pressure state is formed in the check pipeline 20, and gas is conveyed to the three-way valve 30 through the first electromagnetic valve 21, the flow meter 23 and the second electromagnetic valve 22, and is conveyed to the partition joint 11 through the three-way valve 30, so that continuous conveying of the gas is realized.

By providing the first solenoid valve 21, the input of the gas can be controlled, and after the gas is input to the first solenoid valve 21, the flow rate of the gas is measured by the flow meter 23, and the gas is sent to the three-way valve 30 by the second solenoid valve 22, thereby realizing the continuous gas sending.

Through adopting first solenoid valve 21 and second solenoid valve 22 can conveniently realize right check pipeline 20's control makes things convenient for gas transport, flowmeter 23 can adopt float flowmeter 23 for the flow of measurement gas conveniently carries out quantitative control to gaseous transport.

The opening and closing of the first electromagnetic valve 21 and the second electromagnetic valve 22 may be controlled by an external controller, or a controller may be disposed in the case 10 as needed, and corresponding to the controller and control software, the prior art may be used, and details are not described.

In order to facilitate the control of the first electromagnetic valve 21 and the second electromagnetic valve 22, in this embodiment, optionally, a relay 60 is disposed inside the case 10, the first electromagnetic valve 21, the second electromagnetic valve 22 and the three-way valve 30 are electrically connected to the relay 60, respectively, and the relay 60 controls the first electromagnetic valve 21, the second electromagnetic valve 22 and the three-way valve 30, so that integrated control is facilitated, and the overall structure is more compact. Optionally, the vacuum pump 40 is also electrically connected to the relay 60, so that the relay 60 is used to control the start and stop of the vacuum pump 40.

In order to facilitate sampling of gases with different concentrations, in this embodiment, optionally, the checking pipeline 20 is provided with a plurality of sets of the first electromagnetic valves 21, and the plurality of sets of the first electromagnetic valves 21 are arranged in parallel. Take be provided with three groups first solenoid valve 21 as an example, three groups first solenoid valve 21 can be used for the gas sampling of three kinds of different concentrations respectively, and then can realize the quick butt joint of check pipeline 20 and the gas pipeline of different concentrations, need not install temporarily first solenoid valve 21.

The plurality of sets of first electromagnetic valves 21 may be electrically connected to the relay 60, so that the relay 60 controls the on and off of each first electromagnetic valve 21.

Optionally, in this embodiment, a first pressure regulating valve 24 is disposed between the first electromagnetic valve 21 and the flow meter 23. The first pressure regulating valve 24 is used to regulate the gas pressure of the check line 20, so as to improve the safety of the operation of the check line 20.

With continued reference to fig. 3, 4, 5, and 6, in one embodiment of the present invention, the cleaning circuit 50 includes an air filter 51, and the air filter 51 is connected to the three-way valve 30. After being filtered by the air filter 51, the gas is sent to the three-way valve 30, and then sent to the partition joint 11 or the check line 20 through the three-way valve 30.

By providing the air filter 51, when the vacuum pump 40 is operated, gas enters the cleaning pipeline 50, and after being filtered by the air filter 51, clean and dry air is generated, and the clean and dry air is transmitted to the checking pipeline 20 through the three-way valve 30 and can be used for cleaning the checking pipeline 20; when clean and dry air is delivered to the bulkhead adapter 11 through the three-way valve 30 and further delivered to the inspection apparatus 70, the cleaning of the bulkhead adapter 11 and the inspection apparatus 70 can be conveniently performed.

Through the back flushing operation, the whole cleaning of the sampling component can be realized, and the accuracy of the sampling result is improved.

The air filter 51 may be used to filter impurities in the air, adsorb harmful gases in the air, adsorb moisture in the air, and improve the cleanliness of the air.

In order to maintain a constant pressure state in the cleaning pipeline 50, in this embodiment, a second pressure regulating valve 53 is optionally provided between the air filter 51 and the three-way valve 30, and the second pressure regulating valve 53 is used for controlling the air pressure in the cleaning pipeline 50, so that the air pressure of the cleaning pipeline 50 transmitted to the partition joint 11 and the inspection instrument 70 is maintained in a constant state.

In this embodiment, optionally, a water remover 52 is disposed at an end of the air filter 51 away from the three-way valve 30. The water remover 52 removes water from the gas entering the cleaning pipeline 50, and prevents equipment damage caused by excessive water content in the gas entering the air filter 51.

The utility model can realize the respective sampling of various gases by adopting the arrangement of the cleaning pipeline 50 and the checking pipeline 20, and simultaneously, when needed, the checking pipeline 20 can be cleaned by back flushing through the cleaning pipeline 50, and the checking instrument 70 can also be cleaned with the cleaning pipeline 50, so as to improve the accuracy of sampling; because above-mentioned clean pipeline 50 and check pipeline 20 all are integrated in quick-witted case 10, can make machine case 10 integrate the degree higher, and the function is more complete, and the transportation of whole equipment is also more convenient.

The case 10 can be installed by adopting a 4U standard cabinet, and the interfaces adopt a quick connection mode, so that the maintenance is convenient, and the general performance of the equipment is improved.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A sampling disc is characterized by comprising a case and a partition plate joint arranged outside the case, wherein the partition plate joint is connected with an inspection instrument;

2. The sampling disk of claim 1, wherein a vacuum pump is disposed within the housing, the vacuum pump being disposed between the bulkhead fitting and the three-way valve.

3. The sampling disk according to claim 2, wherein the checking pipeline comprises a first solenoid valve, a flow meter and a second solenoid valve which are connected in sequence, and the second solenoid valve is connected with the partition joint through the three-way valve;

4. The sampling disk of claim 3, wherein said audit line has a plurality of sets of said first solenoid valves, said plurality of sets of said first solenoid valves being arranged in parallel.

5. The sampling disk of claim 3, wherein a first pressure regulating valve is disposed between said first solenoid valve and said flow meter.

6. The sampling disk of claim 3, wherein a relay is provided inside the case, and the first solenoid valve, the second solenoid valve and the three-way valve are electrically connected to the relay, respectively.

7. The sampling tray of claim 6, wherein the vacuum pump is electrically connected to the relay.

8. The sampling disk of claim 2, wherein the purge line comprises an air filter, the air filter being connected to the three-way valve.

9. The sampling disk of claim 8, wherein a water trap is provided at an end of the air filter remote from the three-way valve.

10. The sampling disk of claim 8, wherein a second pressure regulating valve is provided between the air filter and the three-way valve.