CN217211312U - Double-layer gas pipeline air tightness and pressure resistance testing device - Google Patents
Double-layer gas pipeline air tightness and pressure resistance testing device Download PDFInfo
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- CN217211312U CN217211312U CN202220014712.9U CN202220014712U CN217211312U CN 217211312 U CN217211312 U CN 217211312U CN 202220014712 U CN202220014712 U CN 202220014712U CN 217211312 U CN217211312 U CN 217211312U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The utility model discloses a double-deck gas pipeline gas tightness and resistance to pressure testing arrangement, include: the device comprises a compressed air supply pipe, a stop valve, a pressure monitoring device, a plugging flange and a fixing structure; along the flowing direction of compressed gas, a compressed air supply pipe is communicated with a common rail pipe accommodating cavity of a first double-layer common rail pipe, a flange at the end part of the last double-layer common rail pipe is fixedly connected with a plugging flange, a flange at the gas outlet of each double-layer common rail pipe is fixedly connected with a plugging flange, the plugging flange is used for sealing the common rail pipe accommodating cavity, a stop valve and a pressure monitoring device are arranged on the compressed air supply pipe, and the pressure monitoring device is positioned at the downstream of the stop valve; the fixing structure is used for fixedly connecting two adjacent double-layer common rail pipes and a double-wall corrugated pipe connected to the two double-layer common rail pipes. The air tightness and the pressure resistance of a plurality of pipelines can be tested at one time, the testing steps are few, the operation is simple, and the testing efficiency is high.
Description
Technical Field
The utility model relates to an engine technology field, specific theory relates to a double-deck gas pipeline gas tightness and resistance to pressure testing arrangement.
Background
Some gas engines are provided with two double-layer common rail pipes (comprising an inner pipe and an outer pipe, a common rail pipe accommodating cavity is arranged between the inner pipe and the outer pipe, the inner pipe is used for conveying gas, the common rail pipe accommodating cavity plays a role in protection, when the gas of the inner pipe leaks, the gas in the inner pipe enters the common rail pipe accommodating cavity to avoid the gas from leaking into the atmosphere), the two double-layer common rail pipes are communicated through double-wall corrugated pipes (comprising an inner corrugated pipe and an outer corrugated pipe, a corrugated pipe accommodating cavity is arranged between the inner corrugated pipe and the outer corrugated pipe, the inner corrugated pipe is used for communicating the inner pipes of the two double-layer common rail pipes, the corrugated pipe accommodating cavity is used for communicating the common rail pipe accommodating cavity of the two double-layer common rail pipes), when the two common rail pipes and the double-wall corrugated pipe are subjected to gas tightness tests, the three pipes need to be tested for three times, the tests are multiple, the operation is time-consuming and labor-consuming, and the efficiency is low, there is an urgent need for a device that can test the three simultaneously.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough, the utility model discloses the technical problem that will solve is: the double-layer gas pipeline airtightness and pressure resistance testing device for simultaneously performing airtightness and pressure resistance tests on two common-rail pipes and double-wall corrugated pipes is convenient to operate and high in testing efficiency.
In order to solve the technical problem, the technical scheme of the utility model is that:
the utility model provides a double-deck gas pipeline gas tightness and resistance to pressure testing arrangement for detect double-deck common rail pipe and double-walled bellows, double-deck common rail pipe with the double-walled bellows sets up in turn, double-deck common rail pipe is equipped with two at least, the bellows holding chamber intercommunication of double-walled bellows two adjacent common rail pipe's common rail pipe holding chamber, testing arrangement includes: the device comprises a compressed air supply pipe, a stop valve, a pressure monitoring device, a plugging flange and a fixing structure;
along the flowing direction of compressed gas, the compressed air supply pipe is communicated with a common rail pipe accommodating cavity of the first double-layer common rail pipe, a flange at the end part of the last double-layer common rail pipe is fixedly connected with a plugging flange, a flange at the gas outlet of each double-layer common rail pipe is fixedly connected with the plugging flange, the plugging flange is used for sealing the common rail pipe accommodating cavity, the stop valve and the pressure monitoring device are arranged on the compressed air supply pipe, and the pressure monitoring device is positioned at the downstream of the stop valve;
the fixing structure is used for fixedly connecting two adjacent double-layer common rail pipes and the double-wall corrugated pipe connected to the two double-layer common rail pipes.
Preferably, an expanding pipe is communicated between the compressed air supply pipe and the common rail pipe accommodating cavity of the first double-layer common rail pipe, a small opening end of the expanding pipe is fixedly connected with the compressed air supply pipe, and a large opening end of the expanding pipe is fixedly connected with the first double-layer common rail pipe.
Preferably, the small opening end of the flared tube is connected with the compressed air supply tube by a flange, and the large opening end of the flared tube is connected with the first double-layer common rail tube by a flange.
Preferably, the fixing structure comprises two U-shaped plates, bolt holes are respectively formed in two ends of each U-shaped plate, a first end of each U-shaped plate is attached to an end flange of the upstream double-layer common rail pipe, a second end of each U-shaped plate is attached to an end flange of the downstream double-layer common rail pipe, a first end flange of the double-wall corrugated pipe is attached to an end flange of the upstream double-layer common rail pipe, a second end flange of the double-wall corrugated pipe is attached to an end flange of the downstream double-layer common rail pipe, the first end of each U-shaped plate, the end flange of the upstream double-layer common rail pipe and the first end flange of the double-wall corrugated pipe are fixedly connected through bolts, and the second end of each U-shaped plate, the end flange of the downstream double-layer common rail pipe and the second end flange of the double-wall corrugated pipe are fixedly connected through bolts.
Preferably, both ends of the U-shaped plate are respectively provided with an arc-shaped portion.
Preferably, two bending parts of the U-shaped plate are respectively and fixedly provided with a rib plate.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
(1) the air tightness and the pressure resistance of a plurality of pipelines can be tested at one time, the testing steps are few, the operation is simple, and the testing efficiency is high;
(2) the axial displacement of the double-wall corrugated pipe is limited by the fixing structure, the flexible connection of the double-wall corrugated pipe is changed into rigid connection, and a tool base for fixing the corrugated pipe and the like do not need to be arranged independently;
(3) simple structure and convenient assembly and disassembly.
Drawings
FIG. 1 is a schematic structural view of a test pipeline of the double-layer gas pipeline airtightness and pressure resistance test device of the present invention;
FIG. 2 is a schematic perspective view of the U-shaped plate of FIG. 1;
in the figure: 1. a first double-layer common rail pipe; 11. a common rail pipe accommodating cavity; 2. a second double layer common rail pipe; 21. a common rail pipe accommodating cavity; 3. a double-walled bellows; 31. a bellows accommodating chamber; 4. a compressed air supply pipe; 5. a stop valve; 6. a pressure monitoring device; 7. plugging the flange; 8. a seal ring; 9. a flared tube; 10. a U-shaped plate; 101. bolt holes; 102. an arc-shaped portion; 103. a rib plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The utility model provides a double-deck gas pipeline gas tightness and resistance to pressure testing arrangement for detect double-deck common rail pipe and double-walled bellows, double-deck common rail pipe and double-walled bellows set up in turn, and double-deck common rail pipe is equipped with two at least, and the bellows holding chamber of double-walled bellows communicates the common rail pipe holding chamber of two adjacent double-deck common rail pipes, and testing arrangement includes: the device comprises a compressed air supply pipe, a stop valve, a pressure monitoring device, a plugging flange and a fixing structure;
along the flowing direction of compressed gas, a compressed air supply pipe is communicated with a common rail pipe accommodating cavity of a first double-layer common rail pipe, a flange at the end part of the last double-layer common rail pipe is fixedly connected with a plugging flange, a flange at the gas outlet of each double-layer common rail pipe is fixedly connected with a plugging flange, the plugging flange is used for sealing the common rail pipe accommodating cavity, a stop valve and a pressure monitoring device are arranged on the compressed air supply pipe, and the pressure monitoring device is positioned at the downstream of the stop valve;
the fixing structure is used for fixedly connecting two adjacent double-layer common rail pipes and a double-wall corrugated pipe connected to the two double-layer common rail pipes.
Preferably, an expanding pipe is communicated between the compressed air supply pipe and the common rail pipe accommodating cavity of the first double-layer common rail pipe, a small opening end of the expanding pipe is fixedly connected with the compressed air supply pipe, and a large opening end of the expanding pipe is fixedly connected with the first double-layer common rail pipe.
Preferably, the small opening end of the flared pipe is connected with the compressed air supply pipe by a flange, and the large opening end of the flared pipe is connected with the first double-layer common rail pipe by a flange.
Preferably, the fixing structure comprises two U-shaped plates, bolt holes are respectively formed in two ends of each U-shaped plate, a first end of each U-shaped plate is attached to an end flange of the upstream double-layer common rail pipe, a second end of each U-shaped plate is attached to an end flange of the downstream double-layer common rail pipe, a first end flange of the double-wall corrugated pipe is attached to an end flange of the upstream double-layer common rail pipe, a second end flange of the double-wall corrugated pipe is attached to an end flange of the downstream double-layer common rail pipe, the first end of each U-shaped plate, the end flange of the upstream double-layer common rail pipe and the first end flange of the double-wall corrugated pipe are fixedly connected through bolts, and the second end of each U-shaped plate, the end flange of the downstream double-layer common rail pipe and the second end flange of the double-wall corrugated pipe are fixedly connected through bolts.
Preferably, both ends of the U-shaped plate are respectively provided with an arc-shaped portion.
Preferably, two bending parts of the U-shaped plate are respectively and fixedly provided with a rib plate.
As shown in fig. 1 and 2, the working principle and the working process of the testing apparatus will be explained by taking two double-layer common rail pipes and a double-wall corrugated pipe 3 as an example, the double-wall corrugated pipe 3 is connected between a first double-layer common rail pipe 1 and a second double-layer common rail pipe 2, and a corrugated pipe accommodating cavity 31 of the double-wall corrugated pipe 3 is communicated with a common rail pipe accommodating cavity 11 of the first double-layer common rail pipe 1 and a common rail pipe accommodating cavity 21 of the second double-layer common rail pipe 2.
The test device comprises: the device comprises a compressed air supply pipe 4, a stop valve 5, a pressure monitoring device 6, a flared pipe 9, a plugging flange 7 and a fixing structure 8;
the small opening end of the flared pipe 9 is connected with a compressed air supply pipe 4 through a flange, a large opening end flange of the flared pipe 9 is fixedly connected with an end flange of the first double-layer common rail pipe 1, the flared pipe 9 is communicated with the compressed air supply pipe 4 and a common rail pipe accommodating cavity 11, the stop valve 5 and the pressure monitoring device 6 are arranged on the compressed air supply pipe 4, and the pressure monitoring device 6 is positioned at the downstream of the stop valve 5;
a plugging flange 7 is fixedly arranged on a flange at the end part of the second double-layer common rail pipe 2, a plugging flange 7 is fixedly arranged on a flange at the air outlet of the first double-layer common rail pipe 1 and the second double-layer common rail pipe 2, and the plugging flange 7 is used for sealing the common rail pipe accommodating cavity 11, so that the common rail pipe accommodating cavity 11, the corrugated pipe accommodating cavity 31 and the common rail pipe accommodating cavity 21 form a closed cavity;
the fixing structure 8 is used for fixedly connecting the first double-layer common rail pipe 1, the double-wall corrugated pipe 3 and the second double-layer common rail pipe 2.
Fixed knot constructs including two U template 10, the both ends of U template 10 are equipped with bolt hole 101 respectively, the first end of U template 10 and the tip flange laminating of first double-deck common rail pipe 1, the second end of U template 10 and the tip flange laminating of second double-deck common rail pipe 2, the first end flange of double-walled bellows 3 and the tip flange laminating of first double-deck common rail pipe 1, the second end flange of double-walled bellows 3 and the tip flange laminating of second double-deck common rail pipe 2, the first end of U template 10, the tip flange of first double-deck common rail pipe 1 and the first end flange of double-walled bellows 3 pass through bolt fixed connection, the second end of U template 10, the tip flange of second double-deck common rail pipe 2 and the second end flange of double-walled bellows 3 pass through bolt fixed connection.
The two ends of the U-shaped plate 10 are respectively provided with an arc portion 102, the diameter of the arc portion 102 is slightly larger than the outer diameter of the common rail pipe, and the arc portion 102 is used for being attached to the outer peripheral surface of the common rail pipe.
Two bending parts of the U-shaped plate 10 are respectively and fixedly provided with rib plates 103, and the rib plates 103 are used for reinforcing the bending parts of the U-shaped plate 10.
In this application, the binding face between flange and the flange is equipped with sealing washer 8.
When the air tightness and the pressure resistance of the first double-layer common rail pipe 1, the second double-layer common rail pipe 2 and the double-wall corrugated pipe 3 are tested, the compressed air supply pipe 4 is connected with a high-pressure air source, such as an air pump and the like, the stop valve 5 is opened, compressed air (the pressure of the compressed air exceeds 1.5 times of the bearing capacity of the test pipeline) sequentially passes through the compressed air supply pipe 4 and the flared pipe 9 to inflate the common rail pipe accommodating cavity 11, the compressed air flows into the corrugated pipe accommodating cavity 31 and the common rail pipe accommodating cavity 21 until the compressed air fills the common rail pipe accommodating cavity 11, the corrugated pipe accommodating cavity 31 and the common rail pipe accommodating cavity 21, the stop valve 5 is closed, the pressure monitoring device 6 is used for observing the pressure change within a specified time (generally 15min) to judge whether the air tightness and the pressure resistance of the pipeline meet the requirements, and if the pressure value does not change within the specified time, the first double-layer common rail pipe 1, the double-wall corrugated pipe 3 are judged, The air tightness of the second double-layer common rail pipe 2 and the double-wall corrugated pipe 3 meets the requirement, the pressure resistance of the first double-layer common rail pipe 1 and the second double-layer common rail pipe 2 meets the requirement, and if the double-wall corrugated pipe 3 does not bulge outwards within the specified time, the pressure resistance of the double-wall corrugated pipe 3 is judged to meet the requirement.
The utility model discloses a double-deck gas pipeline gas tightness and resistance to pressure testing arrangement has following advantage:
(1) the air tightness and the pressure resistance of a plurality of pipelines can be tested at one time, the testing steps are few, the operation is simple, and the testing efficiency is high;
(2) the axial displacement of the double-wall corrugated pipe is limited by the fixing structure, the flexible connection of the double-wall corrugated pipe is changed into rigid connection, and a tool base for fixing the corrugated pipe and the like do not need to be arranged independently;
(3) simple structure, easy dismounting.
The foregoing is illustrative of the best mode of the invention, and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The protection scope of the present invention is subject to the content of the claims, and any equivalent transformation based on the technical teaching of the present invention is also within the protection scope of the present invention.
Claims (6)
1. Double-deck gas pipeline gas tightness and resistance to pressure testing arrangement for detect double-deck common rail pipe and double-walled bellows, double-deck common rail pipe with the double-walled bellows sets up in turn, double-deck common rail pipe is equipped with two at least, the bellows holding chamber intercommunication of double-walled bellows two adjacent common rail pipe's common rail pipe holding chamber, its characterized in that, testing arrangement includes: the device comprises a compressed air supply pipe, a stop valve, a pressure monitoring device, a plugging flange and a fixing structure;
along the flowing direction of compressed gas, the compressed air supply pipe is communicated with a common rail pipe accommodating cavity of the first double-layer common rail pipe, a flange at the end part of the last double-layer common rail pipe is fixedly connected with a plugging flange, a flange at the gas outlet of each double-layer common rail pipe is fixedly connected with the plugging flange, the plugging flange is used for sealing the common rail pipe accommodating cavity, the stop valve and the pressure monitoring device are arranged on the compressed air supply pipe, and the pressure monitoring device is positioned at the downstream of the stop valve;
the fixing structure is used for fixedly connecting two adjacent double-layer common rail pipes and the double-wall corrugated pipe connected to the two double-layer common rail pipes.
2. The double-layer gas pipeline airtightness and pressure resistance testing device according to claim 1, wherein a flared tube is communicated between the compressed air supply tube and the common rail tube accommodating chamber of the first double-layer common rail tube, a small opening end of the flared tube is fixedly connected with the compressed air supply tube, and a large opening end of the flared tube is fixedly connected with the first double-layer common rail tube.
3. The double-layer gas pipeline airtightness and pressure resistance testing device according to claim 2, wherein the small open end of the flared tube is flange-connected to the compressed air supply tube, and the large open end of the flared tube is flange-connected to the first double-layer common rail tube.
4. The double-layer gas pipeline airtightness and pressure resistance testing apparatus according to claim 1, the fixing structure comprises two U-shaped plates, bolt holes are respectively arranged at two ends of each U-shaped plate, the first ends of the U-shaped plates are attached to end flanges of the double-layer common rail pipes at the upstream, the second end of the U-shaped plate is attached to the end flange of the downstream double-layer common rail, the first end flange of the double-wall corrugated pipe is attached to the end flange of the upstream double-layer common rail pipe, the second end flange of the double-wall corrugated pipe is attached to the end flange of the downstream double-wall common rail pipe, the first end of the U-shaped plate, the end flange of the double-layer common rail pipe at the upstream and the first end flange of the double-wall corrugated pipe are fixedly connected through bolts, and the second end of the U-shaped plate, the end flange of the downstream double-layer common rail pipe and the second end flange of the double-wall corrugated pipe are fixedly connected through bolts.
5. The double-layer gas pipeline airtightness and pressure resistance testing apparatus according to claim 4, wherein both ends of the U-shaped plate are provided with arc-shaped portions, respectively.
6. The double-layer gas pipeline airtightness and pressure resistance testing device according to claim 4, wherein the two bent portions of the U-shaped plate are respectively fixedly provided with a rib plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220014712.9U CN217211312U (en) | 2022-01-04 | 2022-01-04 | Double-layer gas pipeline air tightness and pressure resistance testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220014712.9U CN217211312U (en) | 2022-01-04 | 2022-01-04 | Double-layer gas pipeline air tightness and pressure resistance testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217211312U true CN217211312U (en) | 2022-08-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220014712.9U Active CN217211312U (en) | 2022-01-04 | 2022-01-04 | Double-layer gas pipeline air tightness and pressure resistance testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217211312U (en) |
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- 2022-01-04 CN CN202220014712.9U patent/CN217211312U/en active Active
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