CN215004525U

CN215004525U - Portable emission test system sampling pipe protection device

Info

Publication number: CN215004525U
Application number: CN202120877548.XU
Authority: CN
Inventors: 杜宝程; 王彬; 李璜
Original assignee: China Automotive Engineering Research Institute Co Ltd
Current assignee: China Automotive Engineering Research Institute Co Ltd
Priority date: 2021-04-26
Filing date: 2021-04-26
Publication date: 2021-12-03
Anticipated expiration: 2031-04-26

Abstract

The utility model relates to an automobile emission technical field, concretely relates to portable emission test system sampling pipe protection device, including protective sheath, tightener and the rotating cap that sets gradually, there is the cavity in the protective sheath, the protective sheath front end is equipped with the joint hole of intercommunication cavity, the protective sheath side is equipped with the cable preformed hole, protective sheath rear end terminal surface is the opening of intercommunication cavity, the rotating cap both ends are the opening setting and with protective sheath rear end threaded connection. The utility model discloses can avoid the sampling pipe because plug repeatedly, lead to the easy fracture of special fluorine dragon pipe and heating heat preservation device damaged to lead to the problem of experimental failure.

Description

Portable emission test system sampling pipe protection device

Technical Field

The utility model relates to an automobile emission technical field, concretely relates to portable emission test system sampling pipe protection device.

Background

The portable Emission Measurement system is suitable for a Portable Emission Measurement System (PEMS), and the PEMS consists of a gaseous pollutant Measurement unit and a particulate matter Measurement unit. The gas sampling pipeline collects gas in a vehicle exhaust pipeline through the sampling probe and conveys the gas to the gaseous pollutant measuring unit. The sampling pipe generally uses the teflon pipe, in order to prevent moisture condensation in the appearance gas, heating heat preservation device is equipped with to the sampling pipe outside. Among them are the problems: in the process of the actual road discharge test, the sampling pipe is easy to break due to frequent plugging and unplugging, the heating and heat-preserving device is damaged, the sampling gas leakage is easy to cause, the heating device fails, and the test fails. Therefore, in response to the above problems, a need exists for a protection device for a sampling tube.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a portable emission test system sampling pipe protection device can avoid the sampling pipe because plug repeatedly, leads to the easy fracture of special fluorine dragon pipe and heating heat preservation device damaged to lead to experimental failure's problem.

In order to reach above-mentioned purpose, a portable emission test system sampling pipe protection device is provided, including protective sheath, tightener and the rotating cover that sets gradually, there is the cavity in the protective sheath, the protective sheath front end is equipped with the joint hole of intercommunication cavity, the protective sheath side is equipped with the cable preformed hole, protective sheath rear end terminal surface is the opening of intercommunication cavity, the rotating cover both ends are the opening setting and with protective sheath rear end threaded connection.

The principle and the advantages are as follows:

the protective sleeve, the tightener and the rotating cover are arranged, and the protective sleeve, the tightener and the rotating cover are sequentially arranged, so that the sampling tube sequentially penetrates through the rotating cover, the tightener and the protective sleeve. Wherein, the joint of sampling pipe foremost can pass the joint hole of protective sheath front end and keep fixed with the joint hole, and the lateral wall of sampling pipe is protected by the protective sheath, and the cable preformed hole makes things convenient for the electric circuit of sampling pipe to wear out. The bottom of the protective sleeve is connected with a tightener, and then the tightener and the sampling tube are locked by rotating the cover. The scheme can fasten the sampling pipe joint and the protective sleeve together, and effectively protects the Teflon pipe and the pipeline heating and heat-insulating device; and the structure is simpler, the assembly is convenient, the service life is long, and the operation of the sampling tube is very convenient. The special fluorine pipe and the pipeline heating and heat-insulating device can be effectively protected, and therefore test failure is avoided.

Further, the protective sheath includes half one on the left of the protective sheath and half one on the right of the protective sheath, the front end of half one on the left of the protective sheath and half one on the right of the protective sheath passes through screw fixed connection, the cable preformed hole sets up on half one on the right of the protective sheath.

Divide into the setting of half one on the left side of protective sheath and half one on the right side of protective sheath with the protective sheath, can be more convenient install the protective sheath on the sampling pipe.

Further, the protective sleeve, the tightener and the rotating cover are all made of aluminum alloy materials.

The aluminum alloy material is small in mass, the degree of freedom of the joint can be effectively reduced, the sampling pipe joint is prevented from loosening, and the protection effect is achieved.

Furthermore, the tightener comprises a circular ring part and a plurality of skirt edges, and the skirt edges are distributed on the side face of one end of the circular ring part at equal intervals.

The tightener can restrain the sampling pipe, prevents that the sampling pipe from becoming flexible, plays the guard action.

Furthermore, the side face of the other end, far away from the skirt edge, of the circular ring part is provided with an annular groove, and an opening at the rear end of the protective sleeve is connected with the tightener in an embedded mode through the annular groove.

The annular groove is formed in the annular part, so that the rotating cover can be conveniently and fixedly screwed with the protective sleeve at regular time, and the tightener is abutted against the rear end of the protective sleeve, so that the tightener can fully play a role in tightening the sampling pipe.

Furthermore, the left half part of the inner side surface of the rotary cover is provided with internal threads, and the inner diameter of the right half part of the inner side surface of the rotary cover is gradually reduced towards the opening direction of the near side to form a funnel surface.

The funnel face have the guide effect, rotatory the lid with the protective sheath between fasten regularly, a plurality of skirts on the tightener inwards shrink under the guide effect of funnel face for the tightening device full play acts on tightens up the sampling pipe, thereby reaches better fixed effect.

Drawings

Fig. 1 is an exploded view of a portable emission testing system sampling tube protection device in accordance with an embodiment of the present invention;

FIG. 2 is an exemplary view of a sample tube installed in a sample tube protector;

fig. 3 is a partial cross-sectional view of a sample tube protective device.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a left protective sleeve half part 1, a screw 2, a right protective sleeve half part 3, a tightener 4, a rotary cover 5, a cable preformed hole 6, a joint hole 7, a joint 8, a cable 9, a sampling tube 10, an annular groove 11, a funnel surface 12 and a skirt 13.

Examples

A portable emission test system sampling tube 10 protector substantially as described herein with reference to figures 1 and 2 of the accompanying drawings: comprises a protective sleeve, a tightener 4 and a rotating cover 5 which are arranged in sequence. There is the cavity in the protective sheath, and the protective sheath is cylindrical in this embodiment, and the cavity is cylindrical also.

The front end of the protective sleeve is provided with a joint hole 7 communicated with the cavity, and the joint hole 7 is used for allowing a joint 8 of a sampling tube 10 to pass through and be fixed. And a cable preformed hole 6 communicated with the cavity is formed in the side surface of the protective sleeve and is used for a cable 9 of the sampling tube 10 to pass through. The end face of the rear end of the protective sleeve is an opening communicated with the cavity, and the opening is used for the sampling tube 10 to pass through. The rotating cover 5 is used for the sampling tube 10 to pass through, and the internal thread of the inner side surface of the rotating cover 5 is in threaded connection with the external thread at the rear end of the protective sleeve.

The protective sheath includes half 1 on the protective sheath left side and half 3 on the protective sheath right side, and in this embodiment, the protective sheath is cut along its axis and is obtained half 1 on the protective sheath left side and half 3 on the protective sheath right side. The front end of the left half protective sleeve part 1 and the right half protective sleeve part 3 is fixedly connected through a screw 2, and the cable preformed hole 6 is formed in the right half protective sleeve part 3.

The protective sleeve, the tightener 4 and the rotating cover 5 are all made of aluminum alloy material. The tightener 4 comprises a circular ring part and a plurality of skirt edges 13, wherein the skirt edges 13 are distributed on the side surface of one end of the circular ring part at equal intervals.

As shown in figure 3, the side surface of the other end of the circular ring part far away from the skirt is provided with an annular groove 11, and the opening at the rear end of the protective sleeve is connected with the tightener in an embedded mode through the annular groove. The left half part of the inner side surface of the rotary cover is provided with internal threads, and the inner diameter of the right half part of the inner side surface of the rotary cover is gradually reduced towards the opening direction of the near side to form a funnel surface 12.

The specific implementation process is as follows:

as shown in fig. 1 and 2, two screws 2 are removed, and the left sheath half 1 and the right sheath half 3 are separated. The sampling tube 10 is first passed through the rotary cap 5 and the tightener 4 in this order. And then the cable 9 of the sampling tube 10 passes through the cable preformed hole 6 of the right protective sleeve half 3, then the left protective sleeve half 1 and the right protective sleeve half 3 are combined together, and finally the two screws 2 are screwed down. The bottom of the protective sleeve is connected with a tightener, and then the tightener 4 and the sampling tube 10 are locked by rotating the cover 5. The scheme can fasten the sampling pipe joint and the protective sleeve together, and effectively protects the Teflon pipe and the pipeline heating and heat-insulating device; and the structure is simpler, the assembly is convenient, the service life is long, and the operation of the sampling tube is very convenient.

The above description is only for the embodiments of the present invention, and the common general knowledge of the known specific structures and characteristics in the schemes is described too much here, and those skilled in the art will know all the common technical knowledge in the technical field of the present invention before the application date or the priority date, can learn all the prior art in this field, and have the ability to apply the conventional experimental means before this date, and those skilled in the art can combine the capability of themselves to perfect and implement the scheme, and some typical known structures or known methods should not become obstacles for those skilled in the art to implement the scheme. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The utility model provides a portable emission test system sampling pipe protection device which characterized in that: including protective sheath, tightener and the rotating cover that sets gradually, there is the cavity in the protective sheath, the protective sheath front end is equipped with the joint hole of intercommunication cavity, the protective sheath side is equipped with the cable preformed hole, protective sheath rear end terminal surface is the opening of intercommunication cavity, the rotating cover both ends be the opening setting and with protective sheath rear end threaded connection.

2. The portable emissions testing system sampling tube protection device of claim 1, wherein: the protective sheath includes half one on the left of the protective sheath and half one on the right of the protective sheath, the front end of half one on the left of the protective sheath and half one on the right of the protective sheath passes through screw fixed connection, the cable preformed hole sets up on half one on the right of the protective sheath.

3. The portable emissions testing system sampling tube protection device of claim 1, wherein: the protective sleeve, the tightener and the rotating cover are all made of aluminum alloy materials.

4. The portable emissions testing system sampling tube protection device of claim 1, wherein: the tightener comprises a circular ring part and a plurality of skirt edges, wherein the skirt edges are distributed on the side face of one end of the circular ring part at equal intervals.

5. The portable emission testing system sampling tube protection device of claim 4, wherein: the side face of the other end, far away from the skirt edge, of the circular ring part is provided with an annular groove, and an opening at the rear end of the protective sleeve is connected with the tightener in an embedded mode through the annular groove.

6. The portable emissions testing system sampling tube protection device of claim 5, wherein: the left half part of the inner side surface of the rotary cover is provided with internal threads, and the inner diameter of the right half part of the inner side surface of the rotary cover is gradually reduced towards the opening direction of the near side to form a funnel surface.