CN105065919A - Natural gas pipeline leakage detecting device - Google Patents
Natural gas pipeline leakage detecting device Download PDFInfo
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- CN105065919A CN105065919A CN201510521399.2A CN201510521399A CN105065919A CN 105065919 A CN105065919 A CN 105065919A CN 201510521399 A CN201510521399 A CN 201510521399A CN 105065919 A CN105065919 A CN 105065919A
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- gas pressure
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- valve seat
- natural gas
- detecting device
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Abstract
The invention discloses a natural gas pipeline leakage detecting device which comprises a first gas pressure detecting device and a second gas pressure detecting device, wherein the first gas pressure detecting device is arranged in a gas inlet of a natural gas pipeline, and the second gas pressure detecting device is arranged in a gas outlet of the natural gas pipeline. The first gas pressure detecting device and the second gas pressure detecting device each comprises a valve body, a valve seat, a valve element, an elastic sealing plate, a spring, a gas pressure sensor and a data collector. Pressure signals detected by the two gas pressure sensors are input to the data collectors, and if pressures collected by the two gas pressure sensors have pressure difference, the natural gas pipeline leaks. By means of the natural gas pipeline leakage detecting device, whether leakage happens at the connection position of natural gas pipelines can be accurately detected, detection is more accurate, and errors caused by manual operation are avoided.
Description
Technical field
The present invention relates to a kind of pipeline leakage testing device, particularly relate to a kind of gas pipeline leakage detection device.
Background technique
At present, natural gas pipe network in large multiple cell circlewise or dendritic network distribution, adopt steel pipeline by bottom natural gas transport to each floor of community, then adopt natural gas line (usually adopting PPR pipe) indoor from the bottom input of floor, for each user.Leak testtion must carried out, to guarantee this section of natural gas line No leakage to user's this section of natural gas line before formal use to bottom of the building.
In prior art, normal dependence two gas pressure gages detect, first gas pressure gage is arranged on the suction port end of this section of natural gas line, second gas pressure gage is arranged on the air outlet end of this section of natural gas line, close the valve of this section of natural gas line air outlet end, the force value read on two gas pressure gages has judged whether leakage.Whether above-mentioned detection natural gas line has the mode of leakage mainly to there is following deficiency: one, reading mainly relies on operator, there is people for misreading; Two, in practice, the position that natural gas user is often very high upstairs, operator are upstairs when giving operator's count off downstairs, and operator downstairs not easily do not hear, and easily produce mistake.
Summary of the invention
For above shortcomings in prior art, the invention provides a kind of natural gas line of can accurately measuring and the gas pipeline leakage detection device whether having leakage is installed.
Gas pipeline leakage detection device provided by the invention, comprise the first gas pressure detection unit and the second gas pressure detection unit, described first gas pressure testing fixture is located in the suction port of natural gas pipe, and described second gas pressure detection unit is located in the air outlet of natural gas line;
Described first gas pressure detection unit and the second gas pressure detection unit include valve body, valve seat, spool, elastic packing plate, spring, gas pressure sensor and data acquisition unit; Described valve body has a gas-entered passageway and an outlet passageway, and described gas-entered passageway is communicated with by through hole with outlet passageway; Described valve seat is hollow structure, and the endoporus of valve seat is made up of an aperture and a macropore, and valve seat to be arranged on valve body and to coordinate with valve seal, and the large nose end of valve seat puts in valve body, and the small bore end of valve seat stretches out valve body; The inwall of the inserting end of described valve seat is arranged two symmetrical vents, described vent communicates with outlet passageway; Described spool is column structure, the middle part cylindrical of spool arranges an annular convex shoulder, described annular convex shoulder arranges outside thread, and described spool passes the aperture of valve seat and coordinates with valve base sealing, and annular convex shoulder coordinates with the aperture internal whorl of valve seat; The bottom of described spool is through through hole, described elastic packing plate is fixedly installed on the bottom of spool, the plate face size of elastic packing plate is greater than the aperture size of through hole, described spring is arranged on the below of elastic packing plate, one end of spring is pressed in the base wall of gas-entered passageway, and the other end of spring is pressed on elastic packing plate; Described gas pressure sensor is located in outlet passageway, the pressure signal input data acquisition unit that gas pressure sensor gathers.
The invention has the beneficial effects as follows: the suction port end the first gas pressure detection unit being located at natural gas line, second gas pressure detection unit is located at the air outlet end of natural gas pipe, the pressure signal input data acquisition unit that two gas pressure sensors detect, if when there is pressure reduction in the pressure of two gas pressure sensor collections, then there is leakage in natural gas line, this device realizes connecting natural gas line whether have leakage accurately to detect, detect more accurate, avoid the error that manual operation causes.
Accompanying drawing explanation
Fig. 1 is the structural representation of gas pipeline leakage detection device;
Fig. 2 is the structural representation of gas pressure detection unit.
In accompanying drawing: 1-valve body; 2-valve seat; 3-spool; 4-gas-entered passageway; 5-outlet passageway; 6-through hole; 7-elastic packing plate; 8-spring; 9-vent; 10-annular convex shoulder; 11-seal washer; 12-handle; 13-screw; 14-gas pressure sensor; 15-data acquisition unit; 16-the first gas pressure detection unit; 17-the second gas pressure detection unit; 18-natural gas line; 19-suction valve; 20-gas outlet valve.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in more detail.
As shown in Figure 1, gas pipeline leakage detection device, comprise the first gas pressure detection unit 16 and the second gas pressure detection unit 17, first gas pressure testing fixture 16 is located in the suction port of natural gas pipe 18, and the second gas pressure detection unit 17 is located in the air outlet of natural gas line 18.
First gas pressure detection unit 16 and the second gas pressure detection unit 17 include valve body 1, valve seat 2, spool 3, elastic packing plate 7, spring 8, gas pressure sensor 14 and data acquisition unit 15, as shown in Figure 2.
Wherein, valve body 1 has gas-entered passageway 4 and an outlet passageway 5, and gas-entered passageway 4 is communicated with by through hole 6 with outlet passageway 5.Valve seat 2 is hollow structure, and the endoporus of valve seat 2 is made up of an aperture and a macropore, and valve seat 2 to be arranged on valve body 1 and to be sealed and matched with valve body 1.In the present embodiment, the wall of valve body 1 is provided with an interior threaded hole installed for valve seat 2, and the outer wall of valve seat 2 is provided with outside thread, and valve seat 2 is arranged on valve body 1 by screw-thread fit, and is sealed and matched by seal washer 11 and valve body 1.The large nose end of valve seat 2 puts in valve body 1, and the small bore end of valve seat 2 stretches out valve body 1.The inwall of the inserting end of valve seat 2 is arranged two symmetrical vents 9, vent 9 communicates with outlet passageway 5.
Spool 3, in column structure, the middle part cylindrical of spool 3 is arranged an annular convex shoulder 10, annular convex shoulder 10 arranges outside thread, and spool 3 passes the aperture of valve seat 2 and is sealed and matched with valve seat 2, and annular convex shoulder 10 coordinates with the aperture internal whorl of valve seat 2.The bottom of spool 3 is through through hole 6, elastic packing plate 7 is fixedly installed on the bottom of spool 3, the plate face size of elastic packing plate 7 is greater than the aperture size of through hole 6, spring 8 is arranged on the below of elastic packing plate 7, one end of spring 8 is pressed in the base wall of gas-entered passageway 4, and the other end of spring 8 is pressed on elastic packing plate 7.
Handle 12 is enclosed within spool 3 and stretches out on the outer end of valve seat 2, and is fixed on the outer end of spool 3 by handle 12 by screw 13.Gas pressure sensor 14 is located in outlet passageway 5, the pressure signal input data acquisition unit 15 that gas pressure sensor 14 gathers.
First gas pressure detection unit 16 is located at the suction port end of natural gas line 18, second gas pressure detection unit 17 is located at the air outlet end of natural gas pipe 18, open the suction valve 19 of natural gas line 18 suction port end, close the gas outlet valve 20 on natural gas line 18 outlet end, pull handle 12, be rotated down spool 3, just elastic packing plate 7 can be pushed downwards open, gas-entered passageway 4 is communicated with outlet passageway 5, the pressure signal input data acquisition unit 15 that gas pressure sensor 14 gathers, if when there is pressure reduction in the pressure of two gas pressure sensor 14 collections, then there is leakage in natural gas line 18, this device realizes connecting natural gas line whether have leakage accurately to detect, detect more accurate, avoid the error that manual operation causes.
What finally illustrate is, above embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technological scheme of the present invention or equivalent replacement, and not departing from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (1)
1. gas pipeline leakage detection device, it is characterized in that: comprise the first gas pressure detection unit (16) and the second gas pressure detection unit (17), described first gas pressure testing fixture (16) is located in the suction port of natural gas pipe (18), and described second gas pressure detection unit (17) is located in the air outlet of natural gas line (18);
First gas pressure detection unit (16) and the second gas pressure detection unit (17) include valve body (1), valve seat (2), spool (3), elastic packing plate (7), spring (8), gas pressure sensor (14) and data acquisition unit (15), described valve body (1) has a gas-entered passageway (4) and an outlet passageway (5), and described gas-entered passageway (4) is communicated with by through hole (6) with outlet passageway (5); Described valve seat (2) is hollow structure, the endoporus of valve seat (2) is made up of an aperture and a macropore, valve seat (2) is arranged on valve body (1) and goes up and be sealed and matched with valve body (1), and the large nose end of valve seat (2) puts in valve body (1), and the small bore end of valve seat (2) stretches out valve body (1); The inwall of the inserting end of described valve seat (2) is arranged two symmetrical vents (9), described vent (9) communicates with outlet passageway (5); Described spool (3) is in column structure, the middle part cylindrical of spool (3) is arranged an annular convex shoulder (10), (10) arrange outside thread to described annular convex shoulder, described spool (3) through valve seat (2) aperture and be sealed and matched with valve seat (2), annular convex shoulder (10) coordinates with the aperture internal whorl of valve seat (2); The bottom of described spool (3) is through through hole (6), described elastic packing plate (7) is fixedly installed on the bottom of spool (3), the plate face size of elastic packing plate (7) is greater than the aperture size of through hole (6), described spring (8) is arranged on the below of elastic packing plate (7), one end of spring (8) is pressed in the base wall of gas-entered passageway (4), and the other end of spring (8) is pressed on elastic packing plate (7); Described gas pressure sensor (14) is located in outlet passageway (5), pressure signal input data acquisition unit (15) that gas pressure sensor (14) gathers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510521399.2A CN105065919A (en) | 2015-08-24 | 2015-08-24 | Natural gas pipeline leakage detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510521399.2A CN105065919A (en) | 2015-08-24 | 2015-08-24 | Natural gas pipeline leakage detecting device |
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| Publication Number | Publication Date |
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| CN105065919A true CN105065919A (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510521399.2A Pending CN105065919A (en) | 2015-08-24 | 2015-08-24 | Natural gas pipeline leakage detecting device |
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| CN (1) | CN105065919A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237647A (en) * | 2020-03-17 | 2020-06-05 | 安庆供水集团公司 | User water use abnormity monitoring device and method based on wireless transmission |
| CN111720752A (en) * | 2019-03-20 | 2020-09-29 | 青岛海尔电冰箱有限公司 | Method and device for detecting abnormality of water path |
| CN111720751A (en) * | 2019-03-20 | 2020-09-29 | 青岛海尔电冰箱有限公司 | Method and device for detecting abnormality of water path |
-
2015
- 2015-08-24 CN CN201510521399.2A patent/CN105065919A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720752A (en) * | 2019-03-20 | 2020-09-29 | 青岛海尔电冰箱有限公司 | Method and device for detecting abnormality of water path |
| CN111720751A (en) * | 2019-03-20 | 2020-09-29 | 青岛海尔电冰箱有限公司 | Method and device for detecting abnormality of water path |
| CN111720751B (en) * | 2019-03-20 | 2022-05-20 | 青岛海尔电冰箱有限公司 | Method and device for detecting abnormality of water path |
| CN111720752B (en) * | 2019-03-20 | 2022-05-20 | 青岛海尔电冰箱有限公司 | Method and device for detecting abnormality of water path |
| CN111237647A (en) * | 2020-03-17 | 2020-06-05 | 安庆供水集团公司 | User water use abnormity monitoring device and method based on wireless transmission |
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Application publication date: 20151118 |