CN216870521U

CN216870521U - Detection device

Info

Publication number: CN216870521U
Application number: CN202220661599.3U
Authority: CN
Inventors: 李卫; 李园园; 王雪鹏
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2022-03-25
Filing date: 2022-03-25
Publication date: 2022-07-01
Anticipated expiration: 2032-03-25

Abstract

The utility model provides a detection device for detecting the concentration of a medium, comprising: a housing for circulating a medium; the detection pipe fitting is arranged in the shell and extends along the radial direction of the shell; the medium inlets are arranged on the detection pipe fitting and communicated with the detection pipe fitting, and the medium inlets are arranged at intervals along the extension direction of the detection pipe fitting; and the detection component is arranged at the medium outflow end of the detection pipe fitting and is used for detecting the concentration of the medium flowing into any one medium inflow port. The utility model solves the problem of lower measurement accuracy of the emission concentration in the prior art.

Description

Detection device

Technical Field

The utility model relates to the technical field of concentration detection, in particular to a detection device.

Background

With the continuous improvement of the combustion technology of the diesel engine, the combustion of the fuel in the cylinder is more and more sufficient, and the content of nitrogen oxide in emissions is increased while the combustion is sufficient; and the use of SCR (selective catalytic reduction) can effectively reduce the content of nitrogen oxide in the emission.

In the prior art, concentration distribution of emissions at different positions in an SCR box is measured, whether the structural design of the SCR box is reasonable or not is further evaluated, and a movable sensor is usually arranged in the box body to detect the concentration of the emissions.

However, although the sensor is movable, it can only measure the concentration at a certain position at one time, and cannot simultaneously measure the concentration distribution of the emissions on the same cross section, thereby reducing the accuracy of the emission concentration measurement.

SUMMERY OF THE UTILITY MODEL

The present invention provides a detection device to solve the problem of low accuracy of emission concentration measurement in the prior art.

In order to achieve the above object, the present invention provides a detection device for detecting a concentration of a medium, the detection device including: a housing for circulating a medium; the detection pipe fitting is arranged in the shell and extends along the radial direction of the shell; the medium inlets are arranged on the detection pipe fitting and communicated with the detection pipe fitting, and the medium inlets are arranged at intervals along the extension direction of the detection pipe fitting; and the detection component is arranged at the medium outflow end of the detection pipe fitting and is used for detecting the concentration of the medium flowing into any one medium inflow port.

Further, the detection pipe fitting is rotatably arranged around the center line of the shell.

Further, the detection device further comprises: the switching component is arranged on the detection pipe fitting and positioned at the medium flow inlet, and the medium flow inlet is controlled to be opened or closed by the switching component; the number of the switching members is plural, and the plural switching members are provided in one-to-one correspondence with the plural medium flow inlets.

Further, the switch component is a valve or a plug body.

Further, the inspection pipe includes: the first pipe section extends along the radial direction of the shell, and the plurality of medium flow inlets are arranged at intervals along the extending direction of the first pipe section; and the second pipe section extends along the length direction of the shell and is communicated with the first pipe section, and the second pipe section is rotatably arranged around the central line of the shell.

Further, the detection device further comprises: the pipe fitting that converges, the first end and the second pipeline section intercommunication of pipe fitting that converges, the second end of pipe fitting that converges wears to establish on the casing, and the detection part sets up the second end at the pipe fitting that converges.

Further, the bus pipe member includes: the first confluence section is arranged in the shell and communicated with the second pipe section; the first end and the first section intercommunication that converges of second section that converges, the second end of second section that converges wears to establish on the casing, and the second end that the detection part set up at the second section that converges.

Further, the detection device further comprises: the transmission pipe fitting is arranged in the shell and can be rotationally arranged around the axis of the transmission pipe fitting, the transmission pipe fitting is connected with the second pipe section, and the second pipe section is driven to rotate through the transmission pipe fitting.

Further, the detection device further comprises: the driving part is arranged on the shell and provided with a driving shaft which can rotate around the axis of the driving part, and the driving shaft is in driving connection with the transmission pipe fitting.

Further, the detection device further comprises: the two ends of each mounting bracket are respectively connected with the driving part and the inner wall surface of the shell; a plurality of mounting brackets are disposed around the drive member.

By applying the technical scheme of the utility model, the detection device is used for detecting the concentration of a medium, wherein the detection device comprises a shell for circulating the medium, a detection pipe fitting, a plurality of medium inflow ports and a detection component, the detection pipe fitting is arranged in the shell, and the detection pipe fitting extends along the radial direction of the shell; the medium inlets are arranged on the detection pipe fitting and communicated with the detection pipe fitting, and the medium inlets are arranged at intervals along the extension direction of the detection pipe fitting; the detection component is arranged at the medium outflow end of the detection pipe fitting and is used for detecting the concentration of the medium flowing into any one medium inflow port. By arranging a plurality of medium inlets and opening any one medium inlet to detect the medium concentration at the corresponding position, the detection device can detect the medium concentrations at different positions in the same cross section in the shell, thereby enlarging the detection range and improving the detection precision of the medium concentration.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 shows a schematic structural view of an embodiment of a detection device according to the present invention;

FIG. 2 is a view showing the connection relationship between the inspection pipe and the bus pipe of the inspection apparatus according to the present invention;

fig. 3 is a diagram showing the connection relationship between the housing and the mounting bracket of the detecting device according to the present invention.

Wherein the figures include the following reference numerals:

1. a housing; 2. detecting the pipe fitting; 3. a medium inflow port; 4. a detection section; 21. a first tube section; 22. a second tube section; 5. a manifold member; 51. a first bus bar section; 52. a second bus bar section; 6. a transmission pipe fitting; 7. a drive member; 8. mounting a bracket; 9. and fixing the sleeve.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Referring to fig. 1 to 3, the present invention provides a detection apparatus for detecting a concentration of a medium, the detection apparatus comprising: a housing 1 for circulating a medium; the detection pipe fitting 2 is arranged in the shell 1, and the detection pipe fitting 2 extends along the radial direction of the shell 1; a plurality of medium flow inlets 3, each of which is provided on the detection pipe member 2 and communicates with the detection pipe member 2, the plurality of medium flow inlets 3 being provided at intervals along the extending direction of the detection pipe member 2; and a detection member 4 provided at the medium outflow end of the detection pipe 2, for detecting the concentration of the medium flowing into any one of the medium inflow ports 3 by the detection member 4.

According to the present invention, there is provided a detection device for detecting a concentration of a medium, wherein the detection device includes a housing 1 for flowing the medium, a detection pipe member 2, a plurality of medium inflow ports 3, and a detection member 4, the detection pipe member 2 being disposed in the housing 1, the detection pipe member 2 extending in a radial direction of the housing 1; the medium inlets 3 are all arranged on the detection pipe fitting 2 and communicated with the detection pipe fitting 2, and the medium inlets 3 are arranged at intervals along the extending direction of the detection pipe fitting 2; the detection member 4 is provided at the medium outflow end of the detection pipe member 2, and detects the concentration of the medium flowing into any one of the medium inflow ports 3 by the detection member 4. By providing a plurality of medium inlets 3 and opening any one of the medium inlets 3 to detect the medium concentration at the corresponding position, the detection device can detect the medium concentrations at different positions in the same cross section of the casing 1, thereby widening the detection range and improving the detection accuracy of the medium concentration.

Specifically, the detection pipe member 2 is rotatably provided around the center line of the housing 1. This is provided to further expand the detection range, enabling detection of the concentration of the medium at different positions on the circumferential section (radial section of the housing 1) of the rotation of the detection pipe 2.

In order to facilitate control of opening and closing of the medium inlet 3, the detection device further includes: the switching component is arranged on the detection pipe fitting 2 and positioned at the medium inlet 3, and the opening and closing of the medium inlet 3 are controlled by the switching component; the number of the switching members is plural, and the plural switching members are provided in one-to-one correspondence with the plural medium flow inlets 3. Wherein a plurality of switching elements can be opened simultaneously to enable measurement of the average concentration of the current cross-section.

Preferably, the switch member is a valve or a plug body. By means of the valves, the state of the individual medium inflow openings 3 can be automatically controlled; the plug body is inserted and pulled manually to control the opening or closing of the medium inlet 3.

In the embodiment provided by the present invention, the inspection pipe 2 comprises: a first pipe section 21 extending in a radial direction of the casing 1, a plurality of medium flow inlets 3 being provided at intervals in the extending direction of the first pipe section 21; and a second pipe section 22 extending in the longitudinal direction of the casing 1 and communicating with the first pipe section 21, the second pipe section 22 being rotatably provided around the center line of the casing 1. The arrangement can converge the medium by utilizing the first pipe section 21 and the second pipe section 22, so that the medium keeps a certain amount in the detection pipe fitting 2, the detection component 4 is convenient to detect the concentration, and the detection precision is improved.

In order to prolong the life of the detection member 4 and avoid installing the detection member 4 in the housing 1, the detection device further comprises: the first end and the second pipeline section 22 intercommunication of convergent flow pipe fitting 5, the second end of convergent flow pipe fitting 5 is worn to establish on casing 1, and detection component 4 sets up the second end at convergent flow pipe fitting 5. The inflow path of the medium is extended by the bus pipe member 5, and at the same time, the rotation of the detection pipe member 2 relative to the bus pipe member 5 is facilitated.

Specifically, the bus pipe member 5 includes: a first bus bar section 51 provided in the housing 1, the first bus bar section 51 communicating with the second pipe section 22; and a second bus bar 52, wherein a first end of the second bus bar 52 is communicated with the first bus bar 51, a second end of the second bus bar 52 is arranged on the housing 1 in a penetrating way, and the detection part 4 is arranged at a second end of the second bus bar 52. The first bus bar section 51 extends along the center line direction of the housing 1, and the second bus bar section 52 extends along the radial direction of the housing 1, so that the first bus bar section 51 and the second pipe section 22 are matched with each other, and the detection part 4 is led out of the housing 1 while the communication between the first bus bar section 51 and the second pipe section is ensured.

In an embodiment provided by the present invention, the detection apparatus further includes: the transmission pipe fitting 6 is arranged in the shell 1, the transmission pipe fitting 6 can be rotatably arranged around the axis of the transmission pipe fitting 6, the transmission pipe fitting 6 is connected with the second pipe section 22, and the second pipe section 22 is driven to rotate through the transmission pipe fitting 6. The structure of the arrangement is simple and convenient to implement, and the second pipe section 22 is convenient to drive the first pipe section 21 to rotate. Wherein, the longitudinal section of detecting pipe fitting 2 is the T font, and second pipeline section 22 includes intercommunication section and drive section, and the intercommunication section communicates with first pipeline section 21, and transmission pipe fitting 6 is connected with the drive section, does not communicate between intercommunication section and the drive section, makes things convenient for first pipeline section 21 to rotate like this.

Wherein, detection device still includes: and the driving part 7 is arranged on the shell 1, and the driving part 7 is provided with a driving shaft which can rotate around the axis of the driving part and is in driving connection with the transmission pipe fitting 6. Preferably, the driving member 7 is a driving motor.

The detection device further comprises: a plurality of mounting brackets 8, both ends of each mounting bracket 8 being connected to the driving member 7 and the inner wall surface of the housing 1, respectively; a plurality of mounting brackets 8 are disposed around the drive member 7. Wherein, detection device still includes fixed sleeve 9, and drive component 7 installs in fixed sleeve 9, and a plurality of installing support 8 encircle fixed sleeve 9 and set up to increase drive component 7's installation stability.

The detection device provided by the utility model is applied to the detection of the emission concentration after SCR (selective catalytic reduction technology), and due to the modularized structural design, the detection device is added on the basis of not changing the original SCR (selective catalytic reduction technology) box body, so that the universality of the detection device is improved.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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.

Claims

1. A detection device for detecting a concentration of a medium, the detection device comprising:

a housing (1) for the circulation of a medium;

the detection pipe fitting (2) is arranged in the shell (1), and the detection pipe fitting (2) extends along the radial direction of the shell (1);

the medium inflow ports (3) are all arranged on the detection pipe fitting (2) and communicated with the detection pipe fitting (2), and the medium inflow ports (3) are arranged at intervals along the extension direction of the detection pipe fitting (2);

and a detection member (4) which is provided at a medium outflow end of the detection pipe (2) and detects the concentration of the medium flowing into any one of the medium inflow ports (3) by the detection member (4).

2. A testing device according to claim 1, characterized in that the testing tube (2) is rotatably arranged around the centre line of the housing (1).

3. The detection device according to claim 1, further comprising:

the switching component is arranged on the detection pipe fitting (2) and positioned at the medium inflow port (3), and the medium inflow port (3) is controlled to be opened or closed by the switching component;

the number of the switch members is plural, and the plural switch members are provided in one-to-one correspondence with the plural medium inlets (3).

4. A testing device according to claim 3 wherein the switch member is a valve or a plug.

5. The inspection device according to claim 1, characterized in that the inspection tube (2) comprises:

a first pipe section (21) extending in the radial direction of the housing (1), the plurality of medium inlets (3) being arranged at intervals in the extending direction of the first pipe section (21);

and the second pipe section (22) extends along the length direction of the shell (1) and is communicated with the first pipe section (21), and the second pipe section (22) is rotatably arranged around the central line of the shell (1).

6. The detection device according to claim 5, further comprising:

the first end of the confluence pipe fitting (5) is communicated with the second pipe section (22), the second end of the confluence pipe fitting (5) is arranged on the shell (1) in a penetrating mode, and the detection part (4) is arranged at the second end of the confluence pipe fitting (5).

7. The detection device according to claim 6, characterized in that the junction box (5) comprises:

a first bus section (51) disposed within the housing (1), the first bus section (51) communicating with the second tube section (22);

a second bus bar section (52), wherein a first end of the second bus bar section (52) is communicated with the first bus bar section (51), a second end of the second bus bar section (52) is arranged on the shell (1) in a penetrating mode, and the detection part (4) is arranged at the second end of the second bus bar section (52).

8. The detection device according to claim 5, further comprising:

the transmission pipe fitting (6) is arranged in the shell (1), the transmission pipe fitting (6) is rotatably arranged around the axis of the transmission pipe fitting (6), the transmission pipe fitting (6) is connected with the second pipe section (22), and the second pipe section (22) is driven to rotate through the transmission pipe fitting (6).

9. The detection device according to claim 8, further comprising:

the driving part (7) is arranged on the shell (1), the driving part (7) is provided with a driving shaft which can rotate around the axis of the driving part, and the driving shaft is in driving connection with the transmission pipe fitting (6).

10. The detection device according to claim 9, further comprising:

a plurality of mounting brackets (8), wherein two ends of each mounting bracket (8) are respectively connected with the driving component (7) and the inner wall surface of the shell (1); the plurality of mounting brackets (8) are arranged around the drive member (7).