CN206233978U

CN206233978U - A kind of new type explosion proof device being applied in gaseous propellant engine blast pipe

Info

Publication number: CN206233978U
Application number: CN201621124693.6U
Authority: CN
Inventors: 范昌明
Original assignee: Shanghai Jia Hao Hai Hai Engineering Research And Design Co Ltd
Current assignee: Shanghai Jia Hao Hai Hai Engineering Research And Design Co Ltd
Priority date: 2016-10-14
Filing date: 2016-10-14
Publication date: 2017-06-09
Anticipated expiration: 2026-10-14

Abstract

The utility model provides a kind of new type explosion proof device being applied in gaseous propellant engine blast pipe, including valve seat, protective cover and flame trap, valve seat, valve insertion is formed between protective cover and the inner peripheral surface of flame trap, inlet chamber and air inlet are offered in valve seat, the two ends of inlet chamber connect with blast pipe and air inlet respectively, valve disc is additionally provided with valve insertion, spring and top board, the two ends of spring are affixed with top board and valve disc respectively, the pretightning force of spring makes valve disc be pressed in valve seat, closure air inlet and valve insertion, top board can be moved along the compression direction of spring, for adjusting the pretightning force that spring applies to valve disc；When gas pressure is more than pretightning force in the inlet chamber of valve seat, spring is compressed, and valve disc is connected along the direction movement away from valve seat, air inlet with valve insertion.The pretightning force that the utility model is applied by the removable frame adjustable springs of top board to valve disc, so that safe pressure is adjustable, it can be applied to various occasions, meet different use requirements.

Description

A kind of new type explosion proof device being applied in gaseous propellant engine blast pipe

Technical field

The utility model is related to engine field of explosion, more particularly to one kind to be applied to gaseous propellant engine blast pipe In new type explosion proof device.

Background technology

Currently, global climate constantly deteriorates, and totally, fuel price rises steadily Fossil fuel consumption, international anti-pollution public affairs It is about increasingly strict, therefore use and remove SO_X, except NO_XMeet the with high costs of international anti-pollution convention requirement Deng measure.And gaseous fuel (contain：The fuel gas such as LNG, LPG) progressively manifest as the value of clean energy resource, so as to develop gas list fuel delivery Machine and a series of gas engines of gas dual fuel engine, and gas list fuel, dual fuel engine just more and more should For marine engineering equipments such as each type ships, energy-saving and emission-reduction and energy supply sustainable development are realized with this.

Gas engine is typically made up of gas handling system, gas engine group and gas extraction system, in the fortune of gas engine During row, can cause to discharge fuel gas in the blast pipe of gas extraction system due to many factors, extremely trigger blast, and then Loss blast pipe, and the explosion gas spilling of the flame moment containing band, trigger the major accidents such as engine and boiler room fire, casualties, cause Serious loss.Therefore, classification society rule requires：The blast pipe of gaseous propellant engine should install explosion relief valve or other are anti- Quick-fried device.

At present, in the blast pipe of domestic and international mainstream gas engine fuel, more using the explosion-proof dress of disposable blowout disk Put, as shown in Figure 1；When imflammable gas overflows burning in blast pipe 100, high-temperature high-pressure fuel gas break through the safety of explosion-protection equipment Diaphragm 200 discharges, and reaching reduces pressure, the explosion-proof purpose of protection gas extraction system.But, this kind of explosion-proof dress of disposable safe diaphragm Structure is put relatively simple, with following defect：1st, disposable, blowout disk is finished destroyed；2nd, combustion gas release is unobstructed, impacts film Piece splashes, easily trigger engine and boiler room fire and personnel's injury；3rd, after combustion gas release, can not be closed during pressure reduction, be easily caused Fresh air sucks blast pipe, causes secondary detonation, aggravates to damage；4th, when combustible gas leakage burns, it is impossible to warn in time.

Therefore, the Chinese invention patent application specification of Application No. 201110356999.X discloses a kind of combustion gas peculiar to vessel Engine charge explosion-protection equipment, or, and for example the Chinese invention patent application specification of Application No. 201310739241.6 is public A kind of gas engine explosion-proof valve is opened, it all includes valve seat, valve body, valve plate and spring, valve plate is movably disposed at valve seat and valve Between body, spring is located between valve plate and valve body, for valve plate to be pressed on into valve seat；When combustible gas leakage in blast pipe When, then the imflammable gas of HTHP is discharged after valve plate top is opened；After step-down, valve plate resets under the action of the spring, So as to realize automatic open close.But, all there is following defect in it：Spring is non-adjustable to the pressure that valve plate applies, therefore it is pressed safely Power can only be set as a value, it is impossible to flexibly be set according to actual installation environment, so that constraining it uses scope.

Utility model content

The shortcoming of prior art in view of the above, the technical problems to be solved in the utility model is to provide a kind of application New type explosion proof device in gaseous propellant engine blast pipe, the safe pressure of its setting is adjustable.

To achieve the above object, the utility model provide it is a kind of be applied in gaseous propellant engine blast pipe it is new anti- Quick-fried device, including the valve seat and protective cover and flame trap between valve seat and protective cover and in a ring being oppositely arranged, Valve insertion is formed between the inner peripheral surface of the valve seat, protective cover and flame trap, inlet chamber and air inlet are offered in the valve seat Mouthful, the two ends of the inlet chamber are connected with blast pipe and air inlet respectively, and moveable valve disc is provided with the valve insertion, described Spring and top board are additionally provided with valve insertion, the two ends of the spring are affixed with top board and valve disc respectively, the pretightning force of the spring Valve disc is set to be pressed in valve seat, closure air inlet and valve insertion, the top board can be along the movement of the compression direction of spring, for adjusting bullet The pretightning force that spring applies to valve disc；When gas pressure is more than the pretightning force in the inlet chamber of valve seat, the spring is compressed, The valve disc is connected along the direction movement away from valve seat, the air inlet with valve insertion.

Further, the top board is provided with the threaded shank being located in protective cover, and one is threaded with the threaded shank The outer face outside valve insertion is located on locking nut, the locking nut and protective cover to lean.

Preferably, the annular discharge orifice positioned at flame trap periphery, the resistance flame are formed between the valve seat and protective cover Device connects valve insertion and annular discharge orifice.

Further, at least one guide rail pole is fixedly provided between the valve seat and protective cover, the guide rail pole is along valve disc Moving direction extend, offered in the valve disc and hold the guide rail pole pilot hole that passes through and be engaged with guide rail pole.

Preferably, it is located on the valve seat on the inner face in valve insertion and is installed with gasket seal；When valve disc is pressed in valve During seat, the gasket seal is located between valve disc and valve seat.

Further, at least one distance bush is equipped with the flame trap, one is equipped with each distance bush Fixing bolt, is threadedly connected to a fixing nut being located at outside valve insertion on each fixing bolt.

Preferably, the valve seat includes that being provided with end is provided with the connecting section of adpting flange and remote located at connecting section From the branch plate portion of blast pipe one end, the valve seat is connected by adpting flange with blast pipe, and the inlet chamber is opened in connection Guan Zhong, the air inlet is opened in branch plate portion.

Further, also including pressure sensor, console, alarm controller and alarm, the pressure sensor Be fixed in the connecting section of valve seat and pressure sensor probe be located at inlet chamber in, the alarm controller respectively with pressure Force snesor, alarm are connected with console.

Preferably, the alarm is audible-visual annunciator.

Preferably, the outer edge of the protective cover is provided with towards the protection wing edge extended near valve seat direction, described anti- Flap edge is in horn-like.

As described above, the new type explosion proof device that the utility model is related to, has the advantages that：

The utility model passes through the pretightning force that the removable frame adjustable springs of top board apply to valve disc, and the pretightning force is It is the safe pressure of new type explosion proof device, so that the safe pressure of new type explosion proof device is adjustable, it can be applied to various Occasion, meets different use requirements；Meanwhile, removable by top board can also be easy to calibrate the elastic force of spring, make The safe pressure that spring is always setting to the pretightning force of valve disc is obtained, and then ensures the functional reliability of new type explosion proof device.

Brief description of the drawings

Fig. 1 is the structural representation for being installed on explosion-protection equipment in gaseous propellant engine blast pipe in the prior art.

Fig. 2 is the structural representation of new type explosion proof device in the utility model, and the figure is closed mode.

Fig. 3 is the structural representation of new type explosion proof device in the utility model, and the figure is opening.

Component label instructions

1 flame trap

2 valve seats

21 inlet chambers

22 air inlets

23 connecting section

24 adpting flanges

25 plate portions

3 protective covers

31 protection wing edges

4 valve insertions

5 springs

6 top boards

61 threaded shanks

7 locking nuts

8 annular discharge orifices

9 guide rail poles

10 gasket seals

11 distance bushes

12 fixing bolts

13 fixing nuts

14 pressure sensors

15 alarm controllers

16 valve discs

Specific embodiment

Implementation method of the present utility model is illustrated by particular specific embodiment below, those skilled in the art can be by this Content disclosed by specification understands other advantages of the present utility model and effect easily.

It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., is only used to coordinate specification to be taken off The content shown, so that those skilled in the art understands and reads, is not limited to the enforceable restriction bar of the utility model Part, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influenceing Under effect that the utility model can be generated and the purpose to be reached, all should still fall in the technology disclosed in the utility model In the range of Rong get Neng is covered.Meanwhile, in this specification it is cited such as " on ", D score, "left", "right", the use of " centre " Language, be merely convenient to narration understand, and be not used to limit the enforceable scope of the utility model, the change of its relativeness or Adjustment, under without essence change technology contents, when being also considered as the enforceable category of the utility model.

The utility model provides a kind of new type explosion proof device being applied in gaseous propellant engine blast pipe, such as Fig. 2 or Shown in Fig. 3, the new type explosion proof device includes the valve seat 2 being oppositely arranged and protective cover 3 and installed in valve seat 2 and protective cover 3 Between flame trap 1, the flame trap 1 is also called spark arrester or flame-retardant device, for by by the extinguishing of gas Flame；It is described Valve seat 2 be arranged on blast pipe sidepiece, so as to by the integral installation of new type explosion proof device blast pipe sidepiece.The flame trap 1 It is loop configuration, therefore valve insertion 4 is formed between the inner peripheral surface of the valve seat 2, protective cover 3 and flame trap 1, in the valve seat 2 Inlet chamber 21 and air inlet 22 are offered, the two ends of the inlet chamber 21 connect with blast pipe and air inlet 22 respectively.The valve Valve disc 16 and valve disc 16 are provided with inner chamber 4 can be moved along the direction closer or far from the enterprising gas port 22 of valve seat 2, to connect or seal Stifled air inlet 22 and valve insertion 4.Further, spring 5 and top board 6, the two ends of the spring 5 are additionally provided with the valve insertion 4 Affixed with top board 6 and valve disc 16 respectively, the pretightning force of the spring 5 makes valve disc 16 be pressed in valve seat 2, closure air inlet 22 and valve Inner chamber 4, therefore the pretightning force of spring 5 is also the safe pressure of new type explosion proof device, the top board 6 can be along the compression direction of spring 5 It is mobile, for adjusting the pretightning force that spring 5 applies to valve disc 16, therefore the safe pressure of new type explosion proof device is adjustable, not limits to Setting value is fixed in one, so that new type explosion proof dress can be applied to various occasions, different use requirements is met.In addition, After 5 permanent use of spring, spring 5 can change to the pretightning force of valve disc 16, now, can also be conveniently by movable top plate 6 Ground is calibrated by the elastic force of spring 5 so that spring 5 is always the safe pressure of setting, Jin Erbao to the pretightning force of valve disc 16 Demonstrate,prove the functional reliability of new type explosion proof device.

Under normal circumstances, in the blast pipe of gaseous propellant engine without combustible gas leakage, then the gas pressure in blast pipe Less than the pretightning force of spring 5, new type explosion proof device is closed power, as shown in Fig. 2 now, valve disc 16 is in the pretension of spring 5 Valve seat 2, and closure air inlet 22 and valve insertion 4, the i.e. air inlet 22 of valve disc 16 and the mutual not phase of valve insertion 4 are pressed in the presence of power Logical, the gas in inlet chamber 21 will not be entered in valve insertion 4 by air inlet 22.Under abnormal condition, gaseous propellant engine Blast pipe in have a Combustible Gas Leak, the high-temperature high-pressure fuel gas pressure of leakage exceedes the safe pressure of setting, i.e. valve seat 2 In inlet chamber 21 gas pressure more than spring 5 pretightning force, then valve disc 16 opened by top, along away from the enterprising gas port 22 of valve seat 2 side To movement, as shown in figure 3, now, spring 5 is compressed, air inlet 22 is connected with valve insertion 4；High-temperature high-pressure fuel gas enter valve In inner chamber 4, and pass through from flame trap 1, discharge to the outside of valve insertion 4, and flame in high-temperature high-pressure fuel gas is by flame trap 1 Suppress to extinguish, realize step-down, hinder flame and explosion-proof；In the process, the protective cover 3 can also suppress to discharge the diffusion model of gas Enclose, it is to avoid neighbouring personal damage.After step-down release terminates, i.e., gas pressure is reduced to setting in the inlet chamber 21 of valve seat 2 Below safe pressure, valve disc 16 is resetted in the presence of spring 5, and valve seat 2 is pressed in again, and new type explosion proof device is automatically switched off. Therefore, above-mentioned new type explosion proof device can automatic open close, without human users, prevent fresh air to be inhaled into blast pipe, prevent The infringement of secondary detonation occurs, and plays preferable explosion-proof, the gas extraction system of effective protective gas engine fuel.

Further, as shown in Figure 2 or Figure 3, the top board 6 is provided with the threaded shank 61 being located in protective cover 3, the spiral shell A locking nut 7 is threaded with bar portion 61, the outer face outside valve insertion 4 is located on the locking nut 7 and protective cover 3 Lean.When the safe pressure of regulation setting is needed, locking nut 7 is unscrewed, top board 6 is moved along the compression direction of spring 5, Adjust new type explosion proof device pretightning force of the lower spring 5 to valve disc 16 in off position；After regulation terminates, locking nut 7 is tightened, protected Top board 6 is held relative to valve seat 2 or the position of protective cover 3.

Preferably, as shown in Figure 2 or Figure 3, the ring positioned at the periphery of flame trap 1 is formed between the valve seat 2 and protective cover 3 Shape liberation port 8, the flame trap 1 connection valve insertion 4 and annular discharge orifice 8 can realize annular resistance flame by the annular discharge orifice 8 The surrounding of device 1 can quick release gas, realize explosive decompression, improve explosion-proof performance.In addition, the outside of the protective cover 3 Be provided with edge towards near the direction of valve seat 2 extend protection wing edge 31, the protection wing edge 31 be in the horn-like of external diffusion, That is the internal diameter of protection wing edge 31 extends along direction and gradually increases, and the annular discharge orifice 8 is formed in the He of protection wing edge 31 Between valve seat 2.

Further, as shown in Figure 2 or Figure 3, it is located on the valve seat 2 on the inner face in valve insertion 4 and is installed with sealing Pad 10；When valve disc 16 is pressed in valve seat 2, the gasket seal 10 is located between valve disc 16 and valve seat 2, new anti-to ensure Quick-fried device in off position under air-tightness.At least one guide rail pole 9, institute are fixedly provided between the valve seat 2 and protective cover 3 State guide rail pole 9 along valve disc 16 moving direction extend, offered in the valve disc 16 appearance guide rail pole 9 pass through and with the phase of guide rail pole 9 The pilot hole of cooperation, the guide rail pole 9 is also also cross gasket seal 10.By the phase of pilot hole on guide rail pole 9 and valve disc 16 Mutually coordinating can improve the accuracy of the movement of valve disc 16 so that new type explosion proof device can be opened or closed exactly, moreover it is possible to effectively Valve disc 16 and gasket seal 10 are prevented when being hit, is unlikely to depart from situ, sealing when being easy to valve disc 16 to reset.

The attachment structure of the valve seat 2, protective cover 3 and flame trap 1 is：As shown in Figure 2 or Figure 3, worn in the flame trap 1 At least one distance bush 11 is provided with, a fixing bolt 12 is equipped with each distance bush 11, on each fixing bolt 12 A fixing nut 13 being located at outside valve insertion 4 is threadedly connected to, and then valve seat 2, protective cover 3 are connected with the three of flame trap 1. The valve seat 2 includes that being provided with end is provided with the connecting section 23 of adpting flange 24 and located at connecting section 23 away from blast pipe The branch plate portion 25 of one end, the valve seat 2 is connected by adpting flange 24 with blast pipe, and the inlet chamber 21 is opened in connecting tube In, the air inlet 22 is opened in branch plate portion 25；When new type explosion proof device is closed, valve is located in valve disc 16 and branch plate portion 25 Inner face in inner chamber 4 leans.

As shown in Figure 2 or Figure 3, the new type explosion proof device also includes pressure sensor 14, console, alarm controller 15 and alarm, the pressure sensor 14 be fixed in the connecting section 23 of valve seat 2 and pressure sensor 14 probe In inlet chamber 21, the alarm controller 15 is connected with pressure sensor 14, alarm and console respectively.It is preferred that Ground, the alarm is audible-visual annunciator.When there is Combustible Gas Leak in blast pipe, the pressure sensor 14 can be One time detected the pretightning force of gas pressure in the inlet chamber 21 of valve seat 2 more than spring 5, and alarm controller 15 is passed according to pressure The feedback signal of sensor 14 triggers alarm sound and light alarm on the spot, prevents personnel to be close to, and alarm controller 15 simultaneously will alarm Signal transmission reminds operator to take corresponding safety measure to console.The alarm controller 15, audible-visual annunciator can pacify On pressure sensor 14, alarm controller 15 is by cable connection to console.

In sum, the new type explosion proof device that the application is related to has advantages below：

1st, the new type explosion proof warning device, non-disposable, reusable；

2nd, the new type explosion proof warning device, safe and reliable, is overflowed without flame during release, is splashed without diaphragm, effectively protection week Edge equipment and personal security；

3rd, the new type explosion proof warning device, automatic open close can effectively prevent secondary detonation, safe and efficient reliability；

4th, the new type explosion proof warning device, can in time provide sound and light alarm and remote signal, improve intelligence degree, very Suitable for standby with extra large frock to automaticity requirement gas list fuel higher or double fuel powered ship；

5th, the setting of the new type explosion proof warning device safe pressure is flexible, it is adaptable to all kinds of other gas extraction system of pressure stage； Flange is connected, easy installation and removal, easy maintenance；

6th, the new type explosion proof warning device, simple structure, dependable performance, the blowout disk type that import is may replace completely are explosion-proof Device, reduces cost.

So, the utility model effectively overcomes various shortcoming of the prior art and has high industrial utilization.

Above-described embodiment only illustrative principle of the present utility model and its effect are new not for this practicality is limited Type.Any person skilled in the art can all be carried out under without prejudice to spirit and scope of the present utility model to above-described embodiment Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the essence disclosed in the utility model All equivalent modifications completed under god and technological thought or change, should be covered by claim of the present utility model.

Claims

1. a kind of new type explosion proof device being applied in gaseous propellant engine blast pipe, including the valve seat (2) that is oppositely arranged and Protective cover (3) and flame trap (1) between valve seat (2) and protective cover (3) and in a ring, it is the valve seat (2), anti- Valve insertion (4) is formed between the inner peripheral surface of shield (3) and flame trap (1), offered in the valve seat (2) inlet chamber (21) and Air inlet (22), the two ends of the inlet chamber (21) connect with blast pipe and air inlet (22) respectively, are set in the valve insertion (4) There is moveable valve disc (16), it is characterised in that：Spring (5) and top board (6), the spring are additionally provided with the valve insertion (4) (5) two ends are affixed with top board (6) and valve disc (16) respectively, and the pretightning force of the spring (5) makes valve disc (16) be pressed in valve seat (2), closure air inlet (22) and valve insertion (4), the top board (6) can be along the movements of the compression direction of spring (5), for adjusting bullet The pretightning force that spring (5) applies to valve disc (16)；When gas pressure is more than the pretightning force in the inlet chamber (21) of valve seat (2), The spring (5) is compressed, and the valve disc (16) is along the direction movement away from valve seat (2), the air inlet (22) and valve insertion (4) it is connected.

2. new type explosion proof device according to claim 1, it is characterised in that：The top board (6) is provided with and is located in protection Threaded shank (61) in cover (3), is threaded with a locking nut (7) in the threaded shank (61), the locking nut (7) with it is anti- The outside outer face of valve insertion (4) is located on shield (3) to lean.

3. new type explosion proof device according to claim 1, it is characterised in that：Shape between the valve seat (2) and protective cover (3) Into the annular discharge orifice (8) having positioned at flame trap (1) periphery, the flame trap (1) connects valve insertion (4) and annular discharge orifice (8)。

4. new type explosion proof device according to claim 1, it is characterised in that：Between the valve seat (2) and protective cover (3) also At least one guide rail pole (9) is installed with, the guide rail pole (9) extends along the moving direction of valve disc (16), in the valve disc (16) Offer and hold guide rail pole (9) through and with the pilot hole that is engaged of guide rail pole (9).

5. new type explosion proof device according to claim 1, it is characterised in that：It is located in valve insertion (4) on the valve seat (2) Inner face on be installed with gasket seal (10)；When valve disc (16) is pressed in valve seat (2), the gasket seal (10) is positioned at valve Between disk (16) and valve seat (2).

6. new type explosion proof device according to claim 1, it is characterised in that：At least one is equipped with the flame trap (1) Root distance bush (11), a fixing bolt (12) is equipped with each distance bush (11), spiral shell on each fixing bolt (12) Line is connected to one and is located at valve insertion (4) fixing nut (13) outward.

7. new type explosion proof device according to claim 1, it is characterised in that：The valve seat (2) is provided with including being provided with end The connecting section (23) of adpting flange (24) and located at connecting section (23) away from blast pipe one end branch plate portion (25), institute State valve seat (2) to be connected with blast pipe by adpting flange (24), the inlet chamber (21) is opened in connecting tube, the air inlet Mouth (22) is opened in branch plate portion (25).

8. new type explosion proof device according to claim 7, it is characterised in that：Also include pressure sensor (14), console,

Alarm controller (15) and alarm, the pressure sensor (14) are fixed on the connecting section (23) of valve seat (2) The probe of upper and pressure sensor (14) is located in inlet chamber (21), the alarm controller (15) respectively with pressure sensor (14), alarm is connected with console.

9. new type explosion proof device according to claim 8, it is characterised in that：The alarm is audible-visual annunciator.

10. new type explosion proof device according to claim 1, it is characterised in that：The outer edge of the protective cover (3) is provided with Towards the protection wing edge (31) extended near valve seat (2) direction, the protection wing edge (31) is in horn-like.