CN102798504A

CN102798504A - Leakage detector

Info

Publication number: CN102798504A
Application number: CN2012103005188A
Authority: CN
Inventors: 邵思东; 徐永杰
Original assignee: WEICHAI POWER XIGANG NEW ENERGY ENGINE CO Ltd
Current assignee: WEICHAI POWER XIGANG NEW ENERGY ENGINE CO Ltd
Priority date: 2012-08-22
Filing date: 2012-08-22
Publication date: 2012-11-28
Anticipated expiration: 2032-08-22
Also published as: CN102798504B

Abstract

The invention discloses a leakage detector, belonging to the technical field of natural gas engine. The leakage detector comprises an encloser, wherein the encloser is internally provided with a water tank; a lifting device for the placement of a to-be-detected fuel gas part is arranged above the water tank; the encloser is also internally provided with a gas source for providing compressed gas to the to-be-detected fuel gas part; the encloser is provided with an opening allowing the fuel gas part to come in and go out; a safety door is arranged at the opening; and the encloser is also provided with a view window for viewing the fuel gas part in the water tank. After such the structure is adopted, the to-be-detected fuel gas part is connected with the gas source, the fuel gas part is placed on the lifting device, and the lifting device is responsible for placing the fuel gas part into the water in the water tank, so that the gas source supplies the gas to the to-be-detected fuel gas part to detect the gas tightness of the fuel gas part under the precondition of closing the safety door, and a detecting person can obtain the gas tightness condition of the fuel gas part safely and directly outside the encloser through a view window.

Description

Leak detector

Technical field

The present invention relates to the natural gas engine checkout equipment, relate in particular to a kind of bubble-tight leak detector of combustion gas parts that detects natural gas engine.

Background technology

Natural gas engine requires very high to the impermeability of combustion gas parts; At present the impermeability of the combustion gas parts of natural gas engine being detected is to detect when the appearance test of complete machine, and can cause like this detecting does not have specific aim, and testing result is accurate inadequately; One of them combustion gas parts injection valve like natural gas engine has 12 nozzles at most; Which nozzle gas leakage can't detect when testing detection through the appearance of complete machine is at all, also need the complete machine dismounting be come if detect the combustion gas parts of gas leakage, handles the combustion gas parts of gas leakage; Bother very much; And carry out appearance when test of complete machine, if the combustion gas parts hourglass gas that has, will there be bigger potential safety hazard at the trial.

Summary of the invention

Technical matters to be solved by this invention is: a kind of leak detector is provided, and whether the combustion gas parts that it can independently detect natural gas engine leak gas.

For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of leak detector comprises case; In the said case water tank is installed; The top of said water tank is provided with the jacking gear of laying combustion gas parts to be measured, also is provided with the source of the gas that pressure gas is provided for said combustion gas parts to be measured in the said case, and said case is provided with the opening that supplies said combustion gas parts turnover; Said opening part is provided with safety door; Also be provided with the view window of observing combustion gas parts in the said water tank on the said case, for safety, said view window adopts explosion-proof view window usually.

As a kind of improvement, said jacking gear comprises the fixed part of placing combustion gas parts to be measured and drives the drive unit that said fixed part vertically moves.

As a kind of improvement, said drive unit comprises lift cylinder, and said lift cylinder connects said source of the gas.

As a kind of improvement; Said safety door is a sliding gate; Said case is provided with the gas cylinder of door lock that is in closed condition locked secure door at safety door, and said gas cylinder of door lock connects said source of the gas, is in series with the operation valve of the said gas cylinder of door lock of control between said source of the gas and the said gas cylinder of door lock.

As a kind of improvement; Said operation valve is a solenoid valve; Connect said source of the gas and be connected said operation valve with the pipeline of combustion gas parts to be measured; Said solenoid valve is connected with control module, and said case is provided with the position transducer that the aware security door is in closed condition, and said position transducer connects said control module.

As a kind of improvement, said source of the gas comprises gas-holder, and the air intake opening of said gas-holder connects supercharger.

As a kind of improvement, the below of said case is provided with support, and the bottom of said support is provided with lower margin.

Owing to adopted technique scheme, during use, the combustion gas parts be placed on the jacking gear; Then combustion gas parts to be measured are communicated with source of the gas, in other gas outlet sealing of UUT, through jacking gear the combustion gas parts are placed in the water in the water tank then; Pin safety door and close opening, can charge into pressure gas this moment through source of the gas in combustion gas parts to be measured, and whether the combustion gas parts that the testing staff observes in the water tank through view window leak gas; Can cut off the air feed of source of the gas after detection finishes, the combustion gas parts are taken out from opening, can be conveniently the impermeability of combustion gas parts be detected through this device; Very convenient and safety can guarantee the impermeability of each combustion gas parts to prevent to occur at the trial potential safety hazard before the natural gas engine overall test; Saved some detection steps of the delivery test of complete machine, and the result who uses this device to detect is comparatively meticulous, the particular location of judgement combustion gas parts gas leakage that can be comparatively concrete; Convenient for maintaining for example, detects injection valve certain nozzle gas leakage wherein; Only need to change respective nozzles and get final product, needn't change whole injection valve, thereby practice thrift cost.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

Fig. 1 is the structure cut-open view of the embodiment of the invention;

Fig. 2 is that cut-open view is looked on the left side of Fig. 1;

Fig. 3 is the structural representation of jacking gear;

Among the figure: 1, case; 2, gas cylinder of door lock; 3, lift cylinder; 4, guide pole; 5, bearing; 51, sliding sleeve; 6, the combustion gas parts; 7, installing plate; 8, water tank; 9, support; 10, lower margin; 11, gas-holder; 12, view window; 13, safety door; 14, opening; 15, angle sheave; 16, guide rail.

Embodiment

As depicted in figs. 1 and 2, a kind of leak detector comprises case 1; The below of said case 1 is provided with support 9, and the bottom of said support 9 is provided with lower margin 10, in the said case 1 water tank 8 is installed; Said water tank 8 adopts transparent material to process usually, and the top of said water tank 8 is provided with the jacking gear of laying combustion gas parts 6 to be measured, also is provided with the source of the gas that pressure gas is provided for said combustion gas parts 6 to be measured in the said case 1; Said case 1 is provided with the opening 14 that supplies said combustion gas parts 6 turnover, and said opening 14 places are provided with safety door 13, also is provided with the view window 12 of observing combustion gas parts 6 in the said water tank 8 on the said case 1; In order to protect observer's safety, said view window 12 adopts explosion-proof view window 12 usually, and said opening 14 is positioned at the front of said case 1; Said water tank 8 is positioned at the inboard of case 1 with respect to opening 14; Said view window 12 has two, and a view window 12 is positioned on the safety door 13, and another view window 12 is positioned at the side of said case 1; Said safety door 13 is a sliding gate; The door-plate above and below of said safety door 13 is equipped with angle sheave 15, and said case 1 is provided with the guide rail 16 that matches with said angle sheave 15, and said case 1 is provided with the gas cylinder of door lock 2 that is in closed condition locked secure door 13 at safety door 13; Said gas cylinder of door lock 2 connects said source of the gas, is in series with the operation valve of the said gas cylinder of door lock 2 of control between said source of the gas and the said gas cylinder of door lock 2;

Said jacking gear comprises the fixed part of placing combustion gas parts 6 to be measured and drives the drive unit that said fixed part vertically moves; Said drive unit is a lift cylinder 3; Said lift cylinder 3 connects said source of the gas, and said cylinder is installed on the bearing 5, and said bearing 5 is fixed in the case 1; Said bearing 5 is provided with sliding sleeve 51; Said fixed part comprises the installing plate 7 of placing combustion gas parts 6 and the clamp system that is used to step up combustion gas parts 6, and said installing plate 7 is fixedly connected with two guide poles 4, and said guide pole 4 is slidingly mounted in the said sliding sleeve 51; In order to improve detection efficiency, the combustion gas parts that can place on the installing plate more than 2 or 2 detect simultaneously;

Said source of the gas comprises gas-holder 11, and the air intake opening of said gas-holder 11 connects supercharger, because under not pinning safety door 13 the state of opening 14 sealings; Directly charge into pressure gas to combustion gas parts 6 to be measured and have potential safety hazard, the air feed relation that therefore can be provided with between gas cylinder of door lock 2 and combustion gas parts 6 air feed to be measured is interrelated, and said operation valve is a solenoid valve; Connect said source of the gas and be connected said operation valve with the pipeline of combustion gas parts 6 to be measured, when operation valve was opened, pressure gas was simultaneously to combustion gas parts 6 and gas cylinder of door lock 2 air feed; Said solenoid valve is connected with control module; Said case 1 is provided with the position transducer that aware security door 13 is in closed condition, and said position transducer connects said control module, when only sensor senses safety door 13 is in closed condition in the position; Control module just allows operation valve to open; Operation valve can not opened when safety door 13 is closed, and the control of said lift cylinder 3 also can make whole device easy to use through said control module control.

The work of at first will getting ready during use; Comprise an amount of water of packing in the water tank 8, regulate lower margin 10 and make support 9 steadily and to open supercharger be the pressurized air that gas-holder 11 charges into convenient pressure; Above-mentioned preliminary work is carried out and can be detected combustion gas parts 6, may further comprise the steps:

(1) combustion gas parts 6 to be measured are installed to are placed on the installing plate 7, through stepping up mechanism that combustion gas parts 6 are fixing, this moment, installing plate 7 positions were above water tank 8;

(2) air intake opening with combustion gas parts 6 to be measured is connected with gas-holder 11, and other gas outlet is through the screw plug sealing;

(3) the closed safe door 13, make opening 14 sealings;

(4) gas-holder 11 gets in the water tank 8 for lift cylinder 3 air feed make combustion gas parts 6;

(5) open operation valve, make gas-holder 11 be gas cylinder of door lock 2 air feed closed safe doors 13, for combustion gas parts 6 air feed to be measured detect impermeability;

(6) whether the testing staff leaks gas through view window 12 observation combustion gas parts 6;

(7) detection finishes, and gas-holder 11 stops air feed, is combustion gas parts 6, lift cylinder 3 and gas cylinder of door lock 2 pressure releases through corresponding pipeline, makes their pressure inside recover normal atmosphere (An), and gas cylinder of door lock 2 resets with lift cylinder 3;

(8) open safety door 13, take out combustion gas parts 6.

Claims

1. leak detector; It is characterized in that: comprise case, in the said case water tank is installed, the top of said water tank is provided with the jacking gear of laying combustion gas parts to be measured; Also be provided with the source of the gas that pressure gas is provided for said combustion gas parts to be measured in the said case; Said case is provided with the opening that supplies said combustion gas parts turnover, and said opening part is provided with safety door, also is provided with the view window of observing combustion gas parts in the said water tank on the said case.

2. leak detector as claimed in claim 1 is characterized in that: said jacking gear comprises the fixed part of placing combustion gas parts to be measured and drives the drive unit that said fixed part vertically moves.

3. leak detector as claimed in claim 2 is characterized in that: said drive unit comprises lift cylinder, and said lift cylinder connects said source of the gas.

4. leak detector as claimed in claim 1; It is characterized in that: said safety door is a sliding gate; Said case is provided with the gas cylinder of door lock that is in closed condition locked secure door at safety door; Said gas cylinder of door lock connects said source of the gas, is in series with the operation valve of the said gas cylinder of door lock of control between said source of the gas and the said gas cylinder of door lock.

5. leak detector as claimed in claim 4; It is characterized in that: said operation valve is a solenoid valve; Connect said source of the gas and be connected said operation valve with the pipeline of combustion gas parts to be measured; Said solenoid valve is connected with control module, and said case is provided with the position transducer that the aware security door is in closed condition, and said position transducer connects said control module.

6. like each described leak detector of claim 1-5, it is characterized in that: said source of the gas comprises gas-holder, and the air intake opening of said gas-holder connects supercharger.

7. the described leak detector of claim 1, it is characterized in that: the below of said case is provided with support, and the bottom of said support is provided with lower margin.