阅读说明：本技术 一种点型可燃气体探测器现场标定及检测装置 (Point type combustible gas detector on-site calibration and detection device ) 是由 李学越 王金凯 王守久 于 2020-12-22 设计创作，主要内容包括：本发明公开了一种点型可燃气体探测器现场标定及检测装置,特别是涉及点型可燃气体探测器标定检测技术领域,包括可燃气体探测器校准单元和标准气体混合单元,标准气体混合单元位于可燃气体探测器校准单元右侧。该种点型可燃气体探测器现场标定及检测装置,实现现场标定和检测同步完成,而且整个装置体积小,便于携带,方便操作,且最大限度节省标准高浓度气体,这样能够有效降低其现场进行标定和检测实施的复杂程度,最大限度节省人力物力成本,且最大程度的保证操作过程的安全可靠,解决了针对现场目前难以进行点型可燃气体探测器的标定及检测工作的问题。(The invention discloses a point type combustible gas detector on-site calibration and detection device, and particularly relates to the technical field of point type combustible gas detector calibration and detection. The on-site calibration and detection device for the point-type combustible gas detector can realize synchronous completion of on-site calibration and detection, is small in size, convenient to carry and operate, and can save standard high-concentration gas to the maximum extent, so that the complexity of on-site calibration and detection implementation can be effectively reduced, the cost of manpower and material resources is saved to the maximum extent, the safe and reliable operation process is guaranteed to the maximum extent, and the problem that the point-type combustible gas detector is difficult to calibrate and detect on site at present is solved.)

1. The utility model provides a point type combustible gas detector is on-spot markd and detection device, includes combustible gas detector calibration unit (1) and standard gas mixing unit (2), standard gas mixing unit (2) are located combustible gas detector calibration unit (1) right side, its characterized in that:

the standard gas mixing unit (2) comprises a first combustible gas concentration sampling sensor (23), a second combustible gas concentration sampling sensor (24), an air intake valve (25), an intelligent pressure release valve (26), a shell (27), a high-concentration standard combustible gas intake valve (28), a high-concentration standard combustible gas container (29) and a gas turbulence device (30), wherein the first combustible gas concentration sampling sensor (23) and the second combustible gas concentration sampling sensor (24) are symmetrically embedded in the left sides of the upper end and the lower end of the shell (27), a standard gas circulating air outlet (21) and a standard gas circulating air return port (22) are respectively arranged on the upper side and the lower side of the left end of the shell (27), the air intake valve (25) is arranged in the middle of the upper end of the shell (27), the intelligent pressure release valve (26) is arranged in the middle of the lower end of the shell (27), and the high-concentration standard combustible gas container (29) is positioned on the right side of, the high-concentration standard combustible gas inlet valve (28) is installed between the shell (27) and the high-concentration standard combustible gas container (29), and the gas turbulence device (30) is installed inside the shell (27);

combustible gas detector calibration unit (1) is including sealed cowling (13), air cock (14), return air pipe (15), bracing piece (16) and air pipe (17) admits air, bracing piece (16) are fixed in the middle of sealed cowling (13) lower extreme, sealed cowling (13) upper end outside is fixed with sealed cushion (11), the inside some type combustible gas detector (12) that remain to mark or detect that set up of sealed cowling (13), air cock (14) have two, air cock (14) run through respectively and fix in sealed cowling (13) lower extreme left and right sides, return air pipe (15) meet the right side air cock (14) lower extreme, air pipe (17) of admitting air meet left air cock (14) lower extreme.

2. The on-site calibration and detection device for the point type combustible gas detector as claimed in claim 1, wherein: PLC controller and touch-control screen are installed to shell (27) front end, touch-control screen and PLC controller signal connection, combustible gas concentration sampling sensor (23) and combustible gas concentration sampling sensor two (24) all with PLC controller signal connection, air admission valve (25) and high concentration standard combustible gas admission valve (28) are the solenoid valve, air admission valve (25) and high concentration standard combustible gas admission valve (28) all with PLC controller signal connection.

3. The on-site calibration and detection device for the point type combustible gas detector as claimed in claim 1, wherein: the tail end of the air inlet pipe (17) is connected and communicated with a standard gas circulating air outlet (21), and the tail end of the air return pipe (15) is connected and communicated with a standard gas circulating air return port (22).

4. The on-site calibration and detection device for the point type combustible gas detector as claimed in claim 1, wherein: the sealing cover (13) is made of high-strength ABS materials.

5. The on-site calibration and detection device for the point type combustible gas detector as claimed in claim 1, wherein: the shell (27) is made of high-strength ABS materials.

Technical Field

The invention relates to the technical field of calibration and detection of point type combustible gas detectors, in particular to a field calibration and detection device of a point type combustible gas detector.

Background

In order to prevent safety accidents caused by abnormal use of the point type combustible gas detector, the conventional point type combustible gas detector needs to be regularly checked and calibrated according to the requirements of a manufacturer to ensure the effective normal operation of the detector, if the detector is dismantled and the detector returns to the factory for calibration and detection, the use of a user is interrupted, the calibration period and the cost are increased, if a professional is dispatched to carry out field calibration, the functions and the convenience of the calibration and detection device are still not perfect, and certain operation difficulty exists.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a point type combustible gas detector on-site calibration and detection device, which solves the problem that the point type combustible gas detector is difficult to calibrate and detect on site at present.

The technical scheme adopted by the invention for solving the technical problems is as follows: a spot type combustible gas detector on-site calibration and detection device comprises a combustible gas detector calibration unit and a standard gas mixing unit, wherein the standard gas mixing unit is positioned on the right side of the combustible gas detector calibration unit;

the standard gas mixing unit comprises a combustible gas concentration sampling sensor I, a combustible gas concentration sampling sensor II, an air inlet valve, an intelligent pressure release valve, a shell, a high-concentration standard combustible gas inlet valve, a high-concentration standard combustible gas container and a gas turbulence device, the first combustible gas concentration sampling sensor and the combustible gas concentration sampling sensor are symmetrically embedded into the left side of the upper end and the lower end of the shell, the upper side and the lower side of the left end of the shell are respectively provided with a standard gas circulating air outlet and a standard gas circulating air return port, the air inlet valve is arranged in the middle of the upper end of the shell, the intelligent pressure release valve is arranged in the middle of the lower end of the shell, the high-concentration standard combustible gas container is positioned on the right side of the shell, the high-concentration standard combustible gas inlet valve is arranged between the shell and the high-concentration standard combustible gas container, and the gas turbulence device is arranged in the shell;

combustible gas detector calibration unit includes sealed cowling, air cock, return air pipe, bracing piece and inlet air pipe, the bracing piece is fixed in the middle of the sealed cowling lower extreme, the sealed cowling upper end outside is fixed with sealed cushion, the inside some type combustible gas detector that remains to mark or detect that sets up of sealed cowling, the air cock has two, the air cock runs through respectively and fixes in the sealed cowling lower extreme left and right sides, the return air pipe connects on the right side the air cock lower extreme, the inlet air pipe connects on the left the air cock lower extreme.

Specifically, PLC controller and touch-control screen are installed to the shell front end, touch-control screen and PLC controller signal connection, combustible gas concentration sampling sensor one and combustible gas concentration sampling sensor two all with PLC controller signal connection, air admission valve and high concentration standard combustible gas admission valve are the solenoid valve, air admission valve and high concentration standard combustible gas admission valve all with PLC controller signal connection.

Specifically, the tail end of the air inlet pipe is connected and communicated with the standard gas circulating air outlet, and the tail end of the air return pipe is connected and communicated with the standard gas circulating air return port.

Specifically, the sealing cover is made of high-strength ABS materials.

Specifically, the housing is made of high-strength ABS material.

Compared with the prior art, the invention has the following beneficial effects: the point type combustible gas detector on-site calibration and detection device has the advantages that on-site calibration and detection are synchronously completed, the whole device is small in size, convenient to carry and operate, standard high-concentration gas is saved to the maximum extent, the complexity of on-site calibration and detection implementation can be effectively reduced, the cost of manpower and material resources is saved to the maximum extent, and the safety and reliability of the operation process are guaranteed to the maximum extent.

Drawings

FIG. 1 is a schematic block diagram of a system according to the present invention;

FIG. 2 is an overall schematic of the present invention.

In the figure: 1-a combustible gas detector calibration unit, 11-a sealing rubber cushion, 12-a point type combustible gas detector to be calibrated or detected, 13-a sealing cover, 14-an air nozzle, 15-an air return pipe, 16-a support rod, 17-an air inlet pipe, 2-a standard gas mixing unit, 21-a standard gas circulating air outlet, 22-a standard gas circulating air return port, 23-a combustible gas concentration sampling sensor I, 24-a combustible gas concentration sampling sensor II, 25-an air inlet valve, 26-an intelligent pressure release valve, 27-a shell, 28-a high-concentration standard combustible gas inlet valve, 29-a high-concentration standard combustible gas container and 30-a gas turbulence device.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

As shown in fig. 1-2, a point-type on-site calibration and detection device for combustible gas detector comprises a combustible gas detector calibration unit 1 and a standard gas mixing unit 2, wherein the standard gas mixing unit 2 is located on the right side of the combustible gas detector calibration unit 1, the standard gas mixing unit 2 comprises a first combustible gas concentration sampling sensor 23, a second combustible gas concentration sampling sensor 24, an air intake valve 25, an intelligent pressure release valve 26, a shell 27, a high-concentration standard combustible gas intake valve 28, a high-concentration standard combustible gas container 29 and a gas turbulence device 30, the first combustible gas concentration sampling sensor 23 and the second combustible gas concentration sampling sensor 24 are symmetrically embedded and installed on the left sides of the upper end and the lower end of the shell 27, a standard gas circulation gas outlet 21 and a standard gas circulation gas return port 22 are respectively arranged on the upper side and the lower side of the left end of the shell 27, air admission valve 25 installs in the middle of the shell 27 upper end, intelligence relief valve 26 is installed in the middle of the shell 27 lower extreme, high concentration standard combustible gas container 29 is located the shell 27 right side, high concentration standard combustible gas admission valve 28 is installed between shell 27 and high concentration standard combustible gas container 29, gaseous vortex device 30 is installed inside shell 27, PLC controller and touch-control screen are installed to shell 27 front end, touch-control screen and PLC controller signal connection, combustible gas concentration sampling sensor 23 and combustible gas concentration sampling sensor two 24 all with PLC controller signal connection, air admission valve 25 and high concentration standard combustible gas admission valve 28 are the solenoid valve, air admission valve 25 and high concentration standard combustible gas admission valve 28 all with PLC controller signal connection, shell 27 is made by the high strength ABS material, firstly, after the calibration unit 1 and the standard gas mixing unit 2 of the portable combustible gas detector reach the point of detecting the point-type combustible gas detector 12 to be calibrated or detected, by arranging the combustible gas detector calibration unit 1 below the point-type combustible gas detector 12 to be calibrated or detected, and then inputting the set concentration through the touch screen, the calibration unit 1 of the combustible gas detector and the standard gas mixing unit 2 work synchronously, the PLC controller controls the high-concentration standard combustible gas inlet valve 28 to be opened when the gas mixing unit is started and the high-concentration standard combustible gas is quantitatively input through the touch screen, at the moment, the high-concentration standard combustible gas in the high-concentration standard combustible gas container 29 enters the shell 27 along the high-concentration standard combustible gas inlet valve 28, meanwhile, the PLC controls the air inlet valve 25 to be opened, so that the outside air is input into the shell 27 and mixed with the high-concentration standard combustible gas;

when external air is input into the shell 27 and mixed with high-concentration standard combustible gas, the internal air pressure of the shell 27 can be automatically adjusted through the intelligent pressure release valve 26 to be consistent with the standard atmospheric pressure, the concentration of the gas in the shell 27 is rapidly balanced through the gas turbulence device 30, and then the mixed gas is sent out to the combustible gas detector calibration unit 1 along the standard gas circulation gas outlet 21;

the combustible gas detector calibration unit 1 comprises a sealing cover 13, an air tap 14, an air return pipe 15, a support rod 16 and an air inlet pipe 17, wherein the support rod 16 is fixed in the middle of the lower end of the sealing cover 13, a sealing rubber pad 11 is fixed on the outer side of the upper end of the sealing cover 13, a point type combustible gas detector 12 to be calibrated or detected is arranged in the sealing cover 13, the air tap 14 comprises two air taps 14, the air tap 14 is respectively penetrated and fixed on the left side and the right side of the lower end of the sealing cover 13, the air return pipe 15 is connected on the right side of the air tap 14, the air inlet pipe 17 is connected on the left side of the lower end of the air tap 14, the tail end of the air inlet pipe 17 is connected and communicated with a standard gas circulation air outlet 21, the tail end of the air return pipe 15 is connected and communicated with the standard gas circulation air return port 22, the sealing cover 13, the sealing cover 13 can cover the point-type combustible gas detector 12 to be calibrated or detected, the sealing performance between the sealing cover 13 and the mounting surface of the point-type combustible gas detector 12 to be calibrated or detected can be improved through the sealing rubber gasket 11, the mixed gas discharged from the standard gas circulating gas outlet 21 can be input into the inner side of the sealing cover 13 from the left gas nozzle 14 along the gas inlet pipe 17, then flows back into the shell 27 along the right gas nozzle 14, the gas return pipe 15 and the standard gas circulating gas return port 22, at the moment, the combustible gas concentration sampling of the standard gas circulating gas outlet 21 and the standard gas circulating gas return port 22 can be respectively sampled through the first combustible gas concentration sampling sensor 23 and the second combustible gas concentration sampling sensor 24, and then, a corresponding balance algorithm is carried out through the PLC controller, so that the state of the electromagnetic valve to be controlled can be rapidly and effectively calculated;

after the air and the high-concentration standard combustible gas are fused and reach a set concentration value, the air and the high-concentration standard combustible gas are detected by a first combustible gas concentration sampling sensor 23 and a second combustible gas concentration sampling sensor 24, and because the first point-type combustible gas detector 12 to be calibrated or detected is connected with the PLC in advance, the PLC can control the start of the point-type combustible gas detector 12 to be calibrated or detected after detection signals are sent to the PLC by the first combustible gas concentration sampling sensor 23 and the second combustible gas concentration sampling sensor 24, and at the moment, whether the point-type combustible gas detector 12 to be calibrated or detected can normally alarm can be detected so as to determine whether the point-type combustible gas detector 12 to be calibrated or detected is in a normal working state;

in addition, the inside of the joint ends of the return air pipe 15 and the intake air pipe 17 are provided with filter screens to prevent foreign matters from entering the standard gas mixing unit 2.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.