CN216621999U - Heat supply pipeline pressure testing device - Google Patents
Heat supply pipeline pressure testing device Download PDFInfo
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- CN216621999U CN216621999U CN202122378245.6U CN202122378245U CN216621999U CN 216621999 U CN216621999 U CN 216621999U CN 202122378245 U CN202122378245 U CN 202122378245U CN 216621999 U CN216621999 U CN 216621999U
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- sealing ring
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- heat supply
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Abstract
The utility model relates to a pressure test device for a heat supply pipeline, which comprises a vacuum pump, a connecting pipeline, a control valve, a pressure display meter, an upper half cover body and a lower half cover body, wherein the vacuum pump is connected with the connecting pipeline; an upper groove is formed in the lower end face of the upper half cover body, and a lower groove is formed in the upper end face of the lower half cover body; an upper sealing ring is arranged on the lower end face of the upper half cover body, a lower sealing ring is arranged on the upper end face of the lower half cover body, the upper sealing ring is positioned around the upper groove, and the lower sealing ring is positioned around the lower groove; the two ends of the upper half cover body and the lower half cover body are respectively detachably connected, and the upper half cover body, the lower half cover body and the pipeline to be detected are enclosed and the upper groove and the lower groove are communicated to form a sealed cavity; one end of a connecting pipeline is fixed on the upper half cover body, the connecting pipeline is communicated with the sealing cavity, the control valve is arranged on the connecting pipeline, and the other end of the connecting pipeline is communicated with the vacuum pump; the pressure display meter is fixed on the upper half cover body, so that the welding position of the heat supply pipeline can be independently detected, and the welding quality can be conveniently and timely determined.
Description
Technical Field
The utility model belongs to the technical field of heat supply pipeline detection equipment, and particularly relates to a pressure testing device for a heat supply pipeline.
Background
Winter heat supply is an important civil engineering in the north of China, and in order to save energy, central heat supply is generally adopted. The centralized heating needs to convey thermal power stations or other heat sources to thousands of households in a pipeline manner. The heat supply pipeline mainly comprises a cast iron pipeline, a plastic pipeline and a concrete pipeline, wherein the cast iron pipeline is a common one. In the process of laying the cast iron pipelines, the two cast iron pipelines are welded oppositely, and the laying length of the pipelines is prolonged, so that the length of the heat supply pipeline meets the use requirement. And (4) pressure test detection is needed to be carried out on the welding position, and whether the welding quality of the welding position meets the requirement is detected.
The Chinese utility model patent with the granted publication number of CN21689215U discloses a "pipeline pressure test device", which comprises a steel block, wherein the side surface of the steel block close to a pipeline is provided with a mounting groove, a blocking plate of the pipeline is positioned in the mounting groove, a fixing part for fixing the blocking plate and the steel block is connected between the blocking plate and the steel block, and one side of the steel block far away from the pipeline is connected with a supporting piece for supporting the steel block; plugging the two ends of the cast iron pipeline by the plugging plates, and injecting high-pressure gas into the pipeline to realize pressure test detection on the heat supply pipeline; to judge whether the welding quality of the relative welding position meets the requirement. When the pressure testing device is used for testing the pressure of the pipeline, the whole heat supply pipeline can be welded well, the pressure is tested integrally, and if leakage occurs in the pressure testing process, the unqualified position cannot be quickly determined, and the pipeline is welded; therefore, it is necessary to develop a pressure testing device to individually detect each welding position.
SUMMERY OF THE UTILITY MODEL
In order to detect the welding position of the heat supply pipeline independently and facilitate the timely determination of the welding quality, the utility model provides a pressure test device for the heat supply pipeline; in order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a pressure test device for a heat supply pipeline comprises a vacuum pump, a connecting pipeline, a control valve, a pressure display meter, an upper half cover body and a lower half cover body; an upper groove is formed in the lower end face of the upper half cover body, and a lower groove is formed in the upper end face of the lower half cover body; an upper sealing ring is arranged on the lower end face of the upper half cover body, a lower sealing ring is arranged on the upper end face of the lower half cover body, the upper sealing ring is positioned around the upper groove, and the lower sealing ring is positioned around the lower groove; the upper half cover body and the lower half cover body are buckled on the circumferential side surface of the pipeline to be detected, two ends of the upper half cover body and two ends of the lower half cover body are respectively detachably connected, and the upper half cover body, the lower half cover body and the pipeline to be detected are enclosed and enable the upper groove and the lower groove to be communicated to form a sealed cavity; one end of the connecting pipeline is fixed on the upper half cover body, the connecting pipeline is communicated with the sealed cavity, the control valve is arranged on the connecting pipeline, and the other end of the connecting pipeline is communicated with the vacuum pump; and the pressure display meter is fixed on the upper half cover body and used for detecting and displaying the pressure in the sealed cavity.
The heat supply pipeline pressure testing device has the beneficial effects that: buckling the upper half cover body and the lower half cover body on a heat supply pipeline, wherein two ends of the upper half cover body and the lower half cover body are detachably connected; the upper half cover body, the lower half cover body and the pipeline to be detected are enclosed to form a sealed cavity; the vacuum pump vacuumizes the sealed cavity through the connecting pipeline, when the vacuum degree reaches a certain value, the control valve is closed, the vacuum pump is closed, one end of pressure maintaining is carried out, the descending value of the pressure display meter is observed to meet the standard, and whether the quality of the welding position reaches the standard or not is judged, so that the welding position of the heat supply pipeline is independently detected, and the welding quality can be conveniently determined in time; the pressure testing device has the characteristics of simple structure and simple and convenient operation.
Furthermore, annular grooves are formed in the lower end face of the upper half cover body and the upper end face of the lower half cover body respectively, the upper sealing ring and the lower sealing ring are embedded in the annular grooves, and the upper sealing ring and the lower sealing ring protrude out of the annular grooves.
Has the advantages that: the upper sealing ring and the lower sealing ring are respectively embedded in the annular groove, so that the upper sealing ring and the lower sealing ring are fixed, and when the upper cover body and the lower cover body are buckled, the upper sealing ring and the lower sealing ring are prevented from being misplaced.
Further, the upper sealing ring and the lower sealing ring respectively comprise at least 2 groups, and when the upper cover body and the lower cover body are buckled, the upper sealing ring and the lower sealing ring are alternately arranged at intervals on a horizontal plane.
Has the advantages that: through setting up sealing washer and lower sealing washer on the multiunit to alternate interval arrangement forms wave seal structure, is favorable to improving when the lock, the leakproofness between the upper half cover body and the lower half cover body and the heat supply pipeline.
Furthermore, the end faces, away from one end of the annular groove, of the upper sealing ring and the lower sealing ring are provided with annular grooves, and when the upper half cover body and the lower half cover body are buckled, the annular grooves are filled with sealant.
Has the advantages that: when the upper half cover body and the lower half cover body are buckled, the sealing glue in the ring groove is filled among the upper half cover body, the lower half cover body and the heat supply pipeline, and the sealing performance among the upper half cover body, the lower half cover body and the heat supply pipeline is favorably improved.
Furthermore, the control valves respectively comprise a first control valve and a second control valve, the first control valve and the second control valve are respectively arranged on the connecting pipeline, and the first control valve and the second control valve are arranged at intervals and used for simultaneously controlling the connection and disconnection of the connecting pipeline.
Has the advantages that: the control valve is set to be a first control valve and a second control valve, two disconnection processes are formed on the connecting pipeline, and the sealing performance of the disconnection of the connecting pipeline in the pressure maintaining process is improved; the detection accuracy is improved.
Furthermore, the two ends of the upper half cover body and the lower half cover body are respectively provided with an ear plate, the ear plates are provided with bolt through holes, and bolts are inserted into the bolt through holes, so that the two ends of the upper half cover body and the lower half cover body can be detachably connected.
Has the advantages that: the two ends of the upper half cover body and the lower half cover body are detachably connected through bolts, and the novel connecting structure is simple in structure and convenient to connect.
Furthermore, openings are respectively formed in the opposite surfaces of the lug plates which are respectively arranged at the two ends of the upper half cover body and the lower half cover body, and when the upper half cover body and the lower half cover body are buckled, a gap exists between the opposite surfaces of the lug plates.
Has the advantages that: through opening on the opposite face of otic placode, when the half cover body of the first half was buckled with the half cover body of the second half, kept certain clearance between the otic placode, it is inseparable to be favorable to the half cover body of the first half, the half cover body of the second half to buckle on heat supply pipeline, improves the leakproofness of sealed cavity.
Drawings
FIG. 1 is a schematic perspective view of a pressure testing device for a heat supply pipeline according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of an upper half cover body of the heat supply pipeline pressure testing device according to an embodiment of the utility model;
FIG. 3 is a schematic perspective view of a lower half cover body of the heat supply pipeline pressure testing device according to an embodiment of the present invention;
fig. 4 is a schematic perspective view of a use state of the heat supply pipeline pressure testing device according to the embodiment of the utility model.
Reference numbers in the figures: 1-a vacuum pump, 2-a connecting pipeline, 3-a pressure display meter, 4-an upper half cover body, 5-a lower half cover body, 6-an upper groove, 7-a lower groove, 8-an upper sealing ring, 9-a lower sealing ring, 10-a heat supply pipeline, 11-an annular groove, 12-a first control valve, 13-a second control valve, 14-an ear plate, 15-a notch and 16-a bolt.
Detailed Description
The utility model is described in further detail below with reference to the following figures and embodiments:
the heat supply pipeline pressure test device disclosed by the embodiment of the utility model has the specific structure shown in the figures 1-4, and comprises a vacuum pump 1, a connecting pipeline 2, a control valve, a pressure display meter 3, an upper half cover body 4 and a lower half cover body 5; an upper groove 6 is arranged on the lower end surface of the upper half cover body 4, and a lower groove 7 is arranged on the upper end surface of the lower half cover body 5; an upper sealing ring 8 is arranged on the lower end face of the upper half cover body 4, a lower sealing ring 9 is arranged on the upper end face of the lower half cover body 5, the upper sealing ring 8 is positioned around the upper groove 6, and the lower sealing ring 9 is positioned around the lower groove 7. The upper half cover body 4 and the lower half cover body 5 are buckled on the circumferential side face of the pipeline to be detected, two ends of the upper half cover body 4 and two ends of the lower half cover body 5 are respectively detachably connected, and the upper half cover body 4, the lower half cover body 5 and the pipeline to be detected are enclosed and enable the upper groove 6 and the lower groove 7 to be communicated to form a sealed chamber; one end of a connecting pipeline 2 is fixed on the upper half cover body 4, the connecting pipeline 2 is communicated with the sealing cavity, the control valve is arranged on the connecting pipeline 2, and the other end of the connecting pipeline 2 is communicated with the vacuum pump 1; the pressure display meter 3 is fixed on the upper half cover body 4 and is used for detecting and displaying the pressure in the sealed chamber.
In this embodiment, annular grooves are respectively formed on the lower end surface of the upper half cover body 4 and the upper end surface of the lower half cover body 5, the upper seal ring 8 and the lower seal ring 9 are embedded in the annular grooves, and the upper seal ring 8 and the lower seal ring 9 protrude out of the annular grooves; the upper sealing ring 8 and the lower sealing ring 9 are respectively embedded in the annular grooves, so that the upper sealing ring 8 and the lower sealing ring 9 are fixed, and when the upper cover half body 4 and the lower cover half body are buckled, the upper sealing ring 8 and the lower sealing ring 9 are prevented from being dislocated. The upper sealing ring 8 and the lower sealing ring 9 respectively comprise 2 groups, and when the upper half cover body 4 and the lower half cover body 5 are buckled, the upper sealing ring 8 and the lower sealing ring 9 are alternately arranged at intervals on a horizontal plane; by arranging 2 groups of upper sealing rings 8 and lower sealing rings 9 which are alternately arranged at intervals, a wave-shaped sealing structure is formed, and the sealing performance between the upper half cover body 4 and the lower half cover body 5 and the heat supply pipeline 10 during buckling is improved. An annular groove 11 is formed in the end faces of the upper sealing ring 8 and the lower sealing ring 9, which are far away from one end of the annular groove, and when the upper half cover body 4 and the lower half cover body 5 are buckled, sealant is filled in the annular groove 11; when the upper half cover body 4 and the lower half cover body 5 are buckled, the sealing glue in the ring groove 11 is filled among the upper half cover body 4, the lower half cover body 5 and the heat supply pipeline 10, which is beneficial to improving the sealing performance among the upper half cover body 4, the lower half cover body 5 and the heat supply pipeline 10. In other embodiments, the upper sealing rings and the lower sealing rings respectively comprise more than 3 groups, 4 groups or 5 groups, and when the upper half cover body and the lower half cover body are buckled, the upper sealing rings and the lower sealing rings are alternately arranged at intervals on a horizontal plane.
In the embodiment, the control valves respectively comprise a first control valve 12 and a second control valve 13, the first control valve 12 and the second control valve 13 are respectively arranged on the connecting pipeline 2, and the first control valve 12 and the second control valve 13 are arranged at intervals and used for simultaneously controlling the on-off of the connecting pipeline 2; the control valves are set to be the first control valve 12 and the second control valve 13, two disconnecting paths are formed for the connecting pipeline 2, and the sealing performance of the disconnecting path of the connecting pipeline 2 in the pressure maintaining process is improved; the detection accuracy is improved. In other embodiments, the control valve may be provided as 1 control valve or as a plurality of control valves, provided that the sealing requirements at the time of disconnection of the connecting pipe are met.
In this embodiment, the two ends of the upper half cover 4 and the lower half cover 5 are respectively provided with an ear plate 14, the ear plates 14 are provided with through holes for bolts 16, and the bolts 16 are inserted into the through holes for bolts 16, so as to realize the detachable connection between the two ends of the upper half cover 4 and the lower half cover 5; the two ends of the upper half cover body 4 and the lower half cover body 5 are detachably connected by bolts 16, and the structure is simple and convenient to connect. The opposite surfaces of the ear plates 14 respectively arranged at the two ends of the upper half cover body 4 and the lower half cover body 5 are respectively provided with a notch 15, and when the upper half cover body 4 and the lower half cover body 5 are buckled, a gap is formed between the opposite surfaces of the ear plates 14; through the notches 15 on the opposite surfaces of the lug plates 14, when the upper half cover body 4 and the lower half cover body 5 are buckled, a certain gap is kept between the lug plates 14, so that the upper half cover body 4 and the lower half cover body 5 are buckled tightly on the heat supply pipeline 10, and the sealing performance of the sealing chamber is improved. In other embodiments, the two ends of the lug plate adopt the clamps to replace bolt connection, the clamps specifically comprise door-shaped supports, threaded through holes are respectively formed in the two side walls of each door-shaped support, the jacking rods are inserted in the screw rod through holes, and the top pressing rods are tightly pressed to realize detachable connection between the two ends of the upper half cover body and the lower half cover body.
When the heat supply device is used, the upper half cover body 4 and the lower half cover body 5 are buckled on a heat supply pipeline 10, the lug plates 14 of the upper half cover body 4 and the lower half cover body 5 are connected through bolts 16, and the upper half cover body 4, the lower half cover body 5 and a pipeline to be detected are enclosed to form a sealed cavity; the vacuum pump 1 is used for vacuumizing the sealed cavity through the connecting pipeline 2, after the vacuum degree reaches a certain value, the control valve is closed, the vacuum pump 1 is closed, one end time of pressure maintaining is carried out, the descending value of the pressure display table 3 is observed to meet the standard, and whether the quality of a welding part reaches the standard or not is judged.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (7)
1. A pressure test device for a heat supply pipeline is characterized by comprising a vacuum pump, a connecting pipeline, a control valve, a pressure display meter, an upper half cover body and a lower half cover body; an upper groove is formed in the lower end face of the upper half cover body, and a lower groove is formed in the upper end face of the lower half cover body; an upper sealing ring is arranged on the lower end face of the upper half cover body, a lower sealing ring is arranged on the upper end face of the lower half cover body, the upper sealing ring is positioned around the upper groove, and the lower sealing ring is positioned around the lower groove; the upper half cover body and the lower half cover body are buckled on the circumferential side surface of the pipeline to be detected, two ends of the upper half cover body and two ends of the lower half cover body are respectively detachably connected, and the upper half cover body, the lower half cover body and the pipeline to be detected are enclosed and enable the upper groove and the lower groove to be communicated to form a sealed cavity; one end of the connecting pipeline is fixed on the upper half cover body, the connecting pipeline is communicated with the sealed cavity, the control valve is arranged on the connecting pipeline, and the other end of the connecting pipeline is communicated with the vacuum pump; and the pressure display meter is fixed on the upper half cover body and used for detecting and displaying the pressure in the sealed cavity.
2. The heat supply pipeline pressure testing device according to claim 1, wherein annular grooves are respectively formed in the lower end face of the upper half cover body and the upper end face of the lower half cover body, the upper sealing ring and the lower sealing ring are embedded in the annular grooves, and the upper sealing ring and the lower sealing ring protrude out of the annular grooves.
3. The heat supply pipeline pressure testing device according to claim 2, wherein the upper sealing ring and the lower sealing ring respectively comprise at least 2 groups, and when the upper cover half body and the lower cover half body are buckled, the upper sealing ring and the lower sealing ring are alternately arranged at intervals on a horizontal plane.
4. The heat supply pipeline pressure testing device according to claim 3, wherein annular grooves are formed in end faces of the upper sealing ring and the lower sealing ring, which are far away from one end of the annular groove, and when the upper half cover body and the lower half cover body are buckled, the annular grooves are filled with sealant.
5. The heat supply pipeline pressure testing device according to claim 1, wherein the control valves respectively comprise a first control valve and a second control valve, the first control valve and the second control valve are respectively arranged on the connecting pipeline, and the first control valve and the second control valve are arranged at intervals and used for simultaneously controlling the connection and disconnection of the connecting pipeline.
6. The heat supply pipeline pressure testing device according to claim 1, wherein the upper half cover body and the lower half cover body are respectively provided with an ear plate at both ends thereof, the ear plates are provided with bolt through holes, and bolts are inserted into the bolt through holes, so that the detachable connection between both ends of the upper half cover body and the lower half cover body is realized.
7. The heat supply pipeline pressure testing device according to claim 6, characterized in that notches are respectively arranged on the opposite surfaces of the ear plates at the two ends of the upper half cover body and the lower half cover body, and when the upper half cover body and the lower half cover body are buckled, a gap exists between the opposite surfaces of the ear plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122378245.6U CN216621999U (en) | 2021-09-29 | 2021-09-29 | Heat supply pipeline pressure testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122378245.6U CN216621999U (en) | 2021-09-29 | 2021-09-29 | Heat supply pipeline pressure testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216621999U true CN216621999U (en) | 2022-05-27 |
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ID=81690607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122378245.6U Active CN216621999U (en) | 2021-09-29 | 2021-09-29 | Heat supply pipeline pressure testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216621999U (en) |
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2021
- 2021-09-29 CN CN202122378245.6U patent/CN216621999U/en active Active
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