CN208519282U - A kind of gas emergency shut-off valve - Google Patents

Abstract

A kind of gas emergency shut-off valve belongs to gas ductwork safety devices technical field.The gas emergency shut-off valve valve body, the valve body includes bottom flange, middle valve casing, bonnet, it is disposed with valve seat, flap, valve rod from bottom to top in the middle valve casing, valve body inner cavity is divided into epicoele and cavity of resorption by the valve seat, it is connected respectively with gas pipeline, the through-hole being connected with upper and lower chamber is arranged in the valve seat center, and combustion gas flows through valve body through epicoele-through-hole-cavity of resorption；The flap is optionally disposed in the top or upper surface of through-hole, the affixed valve rod in flap upper end, it is arranged on the periphery of the valve rod fluted, a fixed rotating shaft is vertically arranged with the axis of valve rod, a hook is set in rotation in shaft, and the groove and the gib head hook to form mechanical lock buckle, and the utility model solves prior art construction complexity, managed network pressure fluctuation causes valve opening and closing to malfunction, the problems such as safety, poor reliability, makes human being's production, life obtain safety guarantee.

Description

A kind of gas emergency shut-off valve

Technical field

The utility model relates to a kind of gas emergency shut-off valves, belong to gas ductwork safety devices technical field.

Background technique

Combustion gas obtains quickly as clean energy resource in various aspects such as current industrial production, food and beverage sevice and resident livings It is universal.Combustion gas is sent by high, medium and low voltage gas line network to finally with gas point.It is well known that combustion gas is inflammable, explosive, poisonous gas Gas leakage once occurs for body, gas line network, easily causes the safety accidents such as explosion, fire and poisoning, it is therefore necessary to fire A kind of gas emergency shut-off valve is set in gas pipe network, occurs leaking in emergency circumstances in combustion gas, cuts off chimneying rapidly.It is existing There is the gas emergency shut-off valve of technology using solenoid valve control valve rod spring opening/shutting valve, because gas ductwork pressure anomaly leads to valve Door malfunction, influences gas ductwork normal safe operation, how to develop it is a kind of it is reliable for operation, stability is good, structure is simple Gas emergency shut-off valve becomes urgent technical problem to be solved in the field.

Utility model content

The utility model provides a kind of gas emergency shut-off valve, is triggered by electromagnetic force and opens mechanical lock buckle connection, control Flap folding solves the problems, such as to lead to valve malfunction extremely because of ductwork pressure, influences gas ductwork normal safe operation, reaches Gas emergency shut-off valve is reliable for operation, stability is good, the simple purpose of structure.

To achieve the above objectives, the present invention adopts the following technical solutions:

A kind of gas emergency shut-off valve, including valve body, the valve body include bottom flange, middle valve casing, bonnet, described Valve seat, flap, valve rod are disposed in middle valve casing from bottom to top, valve body inner cavity is divided into epicoele and cavity of resorption by the valve seat, It is connected respectively with gas pipeline, the through-hole being connected with upper and lower chamber is arranged in the valve seat center, and combustion gas is through under epicoele-through-hole- Chamber flows through valve body；The flap is optionally disposed in the top or upper surface of through-hole, the affixed valve rod in flap upper end, the valve rod Periphery on be arranged fluted, be vertically arranged a fixed rotating shaft with the axis of valve rod, a hook is set in rotation in shaft, links up with gib head Under, the neck of hook upper, the groove and the gib head hook to form mechanical lock buckle, and a movable contact is arranged in the neck of hook end, The contact pushes mechanical lock buckle described in hook Unscrew to neck of hook direction is mobile.

Upper housing is arranged in above-mentioned gas emergency shut-off valve, the bonnet, top, and control is respectively set in the upper housing two sides Executive device and control instruction device processed, the control executive device includes fixed core, coiling, dynamic iron core, contact, injection molding Shell, the injection casing is interior to be arranged fixed core, setting hole, the external setting coiling, institute in the middle part of the fixed core It states dynamic iron core cunning to be placed in the hole in the middle part of fixed core, the affixed contact of dynamic iron core outer end face, the contact and the neck of hook Head offsets.

Flap connector is arranged in above-mentioned gas emergency shut-off valve between the flap and valve rod, the flap connector Lower end is affixed by air guide nut and the flap, and spring three, the upper valve are arranged between the flap connector and bonnet, Connector is sealedly connected between lid and the upper housing, the connector is that disk covers class formation, passes through the connector of its lower end Nut is affixed with bonnet, the valve stem seal cunning is placed in the vertical core of connector, its lower end is affixed with flap connector downwards, The upper end extends upwardly in upper housing, is correspondingly arranged the shaft and the hook with valve rod in upper housing.

Above-mentioned gas emergency shut-off valve, the upper end of the valve rod are extended to all the way up at the top of the upper housing, the valve The top of bar is affixed to draw in cap two and the sliding valve opening handle two for being placed in the setting of upper housing top；The dynamic iron core other end is affixed small Axis, the small axis are pierced by control executive device shell, the affixed valve opening handle one of the outermost end of the small axis outward.

Above-mentioned gas emergency shut-off valve, the flap are equipped with flat membrane towards valve seat on one side.

Above-mentioned gas emergency shut-off valve, the groove are the annular groove that section configuration is rectangle.

Above-mentioned gas emergency shut-off valve, the gib head back of the hook are arranged a columnar projections, the upper enclosure inner wall with Columnar projections corresponding position is provided with spring base, and spring two is sleeved in columnar projections and spring base.

Spring one is arranged in above-mentioned gas emergency shut-off valve between contact back side retaining ring and shell.

Above-mentioned gas emergency shut-off valve, between the upper housing and bonnet, upper housing and control executive device shell it Between, between upper housing and control instruction device housing, between connector and bonnet, and valve rod be respectively provided with sealing strip.

The utility model provides a kind of gas emergency cut-off valve, the middle and lower part of valve rod and the setting of hook gib head corresponding section Groove is linked up with and forms mechanical lock buckle connection between gib head and stem groove, and the spring two that hook gib head back is arranged in makes this Mechanical lock buckle stable connection is reliable, and it is reliable that the flap spring being arranged between bonnet, and flap connector closes valve, institute State flap and flat membrane be installed on one side towards valve seat, guarantee when gas emergency shutdown valve closing state flap and the contact surface of valve seat it Between seal tight, the control executive device electromagnetic force triggering contact pushes neck of hook rotation, opens mechanical lock buckle connection, guarantee valve Door switching motion is accurate, not managed net pressure fluctuations.

In conclusion the utility model solves prior art gas emergency shut-off valve, structure is complicated, managed network pressure Reeb It is dynamic to lead to valve opening and closing malfunction, stability, poor reliability, it is ensured that air supply system normal safe operation keeps the mankind raw It produces, life obtains safety guarantee.

Detailed description of the invention

Fig. 1 is gas emergency shut-off valve open state longitudinal profile structure schematic described in the utility model；

Fig. 2 is gas emergency shut-off valve closed state longitudinal profile structure schematic described in the utility model；

Fig. 3 is schematic enlarged-scale view at I in Fig. 1；

Fig. 4 is hook structure figure；

Fig. 5 is control executive device profile.

Each list of reference numerals in figure are as follows: 1, valve body, 1-1, bottom flange, 1-2, middle valve casing, 1-3, valve seat, 1-4, flap, 1- 5, flap connector, 1-6, flap spring, 1-7, valve rod, 1-8, air guide nut, 1-9, flat membrane, 1-10, connector nut, 1- 11, bonnet, 1-12, connector, 2, control executive device, 2-1, valve opening handle one, 2-2, small axis, 2-3, dust-proof bolt, 2- 4, fixed core, 2-5, coiling, 2-6, dynamic iron core, 2-7, injection casing, 2-8, spring one, 2-9, contact, 2-9-1, retaining ring, 3, upper housing, 3-1, hook, 3-1-1, columnar projections, 3-1-2, gib head, 3-1-3, hole, 3-1-4, the neck of hook, 3-2, shaft, 3-3, 3-7, positioning sleeve, 3-4, spring, 3-5, spring base, 3-6, dust-proof observation cap two draw cap two, 3-8, valve opening handle two, 4, control Command device, 4-1, shell, 4-2, quad seal pad, 4-3, electronic module, 4-4, casing cover.

Specific embodiment

With reference to the accompanying drawing and specific embodiment the utility model is described in further detail.

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, the utility model provides gas emergency shut-off valve, including valve body 1, control Executive device 2 processed, upper housing 3, control instruction device 4,1 shell of valve body includes bottom flange 1-1, middle valve casing 1-2, upper valve 1-11 is covered, is disposed with valve seat 1-3, flap 1-4, flap connector 1-5, flap bullet from bottom to top in the middle valve casing 1-2 The lower end of spring 1-6, the flap connector 1-5 are set by the affixed flap 1-4 of air guide nut 1-8, the top bonnet, 1-11 Upper housing 3 is set, connector 1-12 is sealedly attached between bonnet, 1-11 and upper housing 3, and the connector 1-12 is that disk covers class Structure, affixed by the connector nut 1-10 and bonnet, 1-11 of its lower end, valve rod 1-7 sealing cunning is placed in connector 1-12 Vertical core in, affixed, the upper end extends upwardly in upper housing 3 with the upper end of flap connector 1-5 downwards for its lower end, valve seat 1- 3 are arranged in the middle part of middle valve casing 1-2, and valve seat 1-3 is communicated using upper plenum as epicoele with combustion gas upstream, the following cavity of valve seat 1-3 It for cavity of resorption, is communicated with combustion gas downstream pipe, the through-hole of the upper and lower chamber of connection is arranged in the center valve seat 1-3, and valve rod 1-7 drives flap 1-4 It moves up and down, when flap 1-4, which is moved downward, to be fallen on valve seat 1-3, valve seat 1-3 central through hole is closed, gas ductwork air-flow It is cut off, when flap, which moves upwards, is detached from valve seat 1-3, valve seat 1-3 central through hole is open-minded, and combustion gas is tight through combustion gas by upstream Anxious shut-off valve epicoele-through-hole-cavity of resorption flows to downstream pipe.In the present embodiment, installed in flap 1-4 towards the one side of valve seat 1-3 There is flat membrane 1-9, guarantee effectively contacting between flap 1-4 and valve seat 1-3, guarantees valve when gas emergency shutdown valve closing state It is sealed between valve 1-4 and valve seat 1-3 contact surface tightly, the balanced upper and lower cavity pressure of air guide nut energy when flap rises makes valve Labor-saving opening is convenient.

Control executive device 2 and control instruction device 4 is respectively set in 3 two sides of upper housing, and mechanical lock is arranged in upper housing 3, The mechanical lock includes hook 3-1, shaft 3-2, abutment sleeve 3-3, and the shaft 3-2 is installed on 3 wall of upper housing, axis Line is vertical with valve rod 1-7 longitudinal centre line, the hook 3-1 gib head 3-1-2 under, the neck of hook upper, through hole 3-1-3 rotation is set In on shaft 3-2, abutment sleeve 3-3 is arranged in both ends, guarantees that the Plane of rotation of hook 3-1 passes through contact 2-9's and valve rod 1-7 Plane is moved back and forth, control 2 contact 2-9 of executive device is extended in upper housing 3 to link with mechanical lock；Link up with the rotation center of 3-1 Positioned at the middle part position on the lower side of hook 3-1, keep opening/shutting valve operation more labor-saving.Section configuration is set on the periphery of valve rod 1-7 It hooks to form mechanical lock buckle for the annular groove 1-7-1, the groove 1-7-1 and hook 3-1 gib head 3-1-2 of rectangle.

It controls executive device 2 and includes fixed core 2-4, coiling 2-5, dynamic iron core 2-6, contact 2-9, injection casing 2-7, Fixed core 2-4 is set in injection casing 2-7, setting hole, external setting coiling 2-5, dynamic iron core 2- in the middle part of fixed core 2-4 6 cunnings are placed in the hole in the middle part of fixed core 2-4, the hook of dynamic iron core 2-6 outer end face affixed contact 2-9, contact 2-9 and hook 3-1 The head handle 3-1-4 offsets.

The upper end of valve rod 1-7 extends to 3 top of upper housing, affixed two 3-7 of drawing cap in the top of valve rod 1-7 and cunning all the way up Be placed in 3 top of upper housing setting two 3-8 of valve opening handle in, the affixed small axis 2-2 of the dynamic iron core 2-6 other end, small axis 2-2 to It is pierced by control 2 shell of executive device, affixed one 2-1 of valve opening handle of the outermost end of small axis 2-2 outside.Link up with the gib head 3-1-2 back of 3-1 A columnar projections 3-1-1 is arranged in portion, and 3 inner wall of upper housing and columnar projections 3-1-1 corresponding position are provided with spring base 3-5, spring Two 3-4 are sleeved on columnar projections 3-1-1 and spring base 3-5, and gib head 3-1-2 is pressed on valve rod 1-7 groove by two 3-4 of spring In 1-7-1, one 2-8 of spring is set, contact is pushed against hook by one 2-8 of spring between the back side contact 2-9 retaining ring 2-9-1 and shell The head 3-1 neck of hook 3-1-4.

Control instruction device 4 includes shell 4-1, quad seal pad 4-2, electronic module 4-3, casing cover 4-4, electronic module 4-4 is set in shell 4-1, receives and processes the information from gas ductwork safe operation monitoring system, is converted into control and is referred to Output is enabled to give control executive device 2.

Between upper housing 3 and bonnet, 1-11, upper housing 3 and control 2 shell of executive device between, upper housing 3 and control Sealing strip is respectively provided between 4 shell of command device, between connector 1-12 and bonnet, 1-11 and valve rod 1-7.

The utility model provides a kind of gas emergency cut-off valve, is normally opened structure, when gas distribution system, gas network has combustion gas to let out When fistulae road pressure anomaly, control executive device 2 obtains the order that control instruction device 4 closes valve, and coiling is powered, and moves Iron core 2-6 overcomes one 2-8 resistance band moving contact 2-9 of spring mobile to hook 3-1 neck of hook side under electromagnetic force, pushes and hangs 3-2 rotates hook 3-1 around the shaft, and the hook lower part 3-1 gib head 3-1-2 rotationally disengages stem groove 1-7-1, gib head 3-1-2 and valve rod The mechanical lock buckle formed between groove 1-7-1 is opened, and the valve rod 1-7 and flap 1-4 are in flap spring 1-6 elastic force and gravity Rapidly moving downward under effect to be in close contact to valve seat 1-3, flap 1-4 and the end face valve seat 1-3, valve seat 1-3 central through hole is closed It closes, fuel gas pipeline air-flow is cut off；After gas distribution system, gas network troubleshooting, one 2-1 of valve opening handle need to only be manually operated and open Valve handle two 3-8, valve rod 1-7 rising, drives flap 1-4 to rise to certain altitude, the groove 1-7-1 on valve rod 1-7 is by gib head 3-1-2 hook card forms mechanical lock buckle, and gas emergency cut-off valve comes back to open state, restores gas circulation.

Two 3-4 of spring at the back gib head 3-1-2 keeps this mechanical lock buckle stable connection reliable, is arranged in bonnet, 1-11 and valve It is reliable that flap spring 1-6 between valve connector 1-5 closes valve, and flap 1-4 is equipped with flat membrane towards valve seat 1-3's on one side 1-9 guarantees that sealing is tight between flap 1-4 and valve seat 1-3 contact surface when gas emergency shutdown valve closing state, electromagnetic force triggering Mechanical lock guarantees that the utility model gas emergency shut-off valve switching motion is accurate, not managed net pressure fluctuations.

In conclusion the utility model solves prior art gas emergency shut-off valve, structure is complicated, managed network pressure Reeb The problems such as moving causes valve opening and closing to malfunction, stability, poor reliability, it is ensured that air supply system normal safe operation keeps the mankind raw It produces, life obtains safety guarantee.

Claims (9)

1. a kind of gas emergency shut-off valve, characterized in that including valve body (1), the valve body (1) include bottom flange (1-1), Middle valve casing (1-2), bonnet, (1-11), the middle valve casing (1-2) is interior to be disposed with valve seat (1-3), flap (1- from bottom to top 4) valve body inner cavity is divided into epicoele and cavity of resorption, is connected respectively with gas pipeline by, valve rod (1-7), the valve seat (1-3), institute It states the valve seat center (1-3) and the through-hole being connected with upper and lower chamber is set, combustion gas flows through the valve body through epicoele-through-hole-cavity of resorption (1)；The flap (1-4) is optionally disposed in the top or upper surface of through-hole, the affixed valve rod in flap (1-4) upper end (1-7) is arranged fluted (1-7-1) on the periphery of the valve rod (1-7), is vertically arranged with the axis of the valve rod (1-7) One fixed rotating shaft (3-2) is revolved on the shaft (3-2) and is set a hook (3-1), hook (3-1) gib head (3-1-2) under, For the neck of hook (3-1-4) upper, the groove (1-7-1) and the gib head (3-1-2) hook form mechanical lock buckle, the neck of hook (3- 1-4) end setting one movable contact (2-9), the contact (2-9) push the hook (3- to the neck of hook direction (3-1-4) is mobile 1) mechanical lock buckle described in Unscrew.

2. gas emergency shut-off valve according to claim 1, characterized in that upper casing is arranged above the bonnet, (1-11) Control executive device (2) and control instruction device (4) is respectively set in body (3), upper housing (3) two sides, and the control executes Device (2) includes fixed core (2-4), coiling (2-5), dynamic iron core (2-6), contact (2-9), injection casing (2-7), described Fixed core (2-4) is set in injection casing (2-7), the coiling line is arranged in setting hole, outside in the middle part of the fixed core (2-4) It encloses (2-5), dynamic iron core (2-6) cunning is placed in the hole in the middle part of the fixed core (2-4), dynamic iron core (2-6) outer end The affixed contact (2-9) in face, the contact (2-9) offset with the head the neck of hook (3-1-4).

3. gas emergency shut-off valve according to claim 2, characterized in that between the flap (1-4) and valve rod (1-7) It is arranged flap connector (1-5), the lower end of the flap connector (1-5) passes through air guide nut (1-8) and the flap (1-4) It is affixed, between the flap connector (1-5) and bonnet, (1-11) be arranged spring three (1-6), the bonnet, (1-11) with It is sealedly connected with connector (1-12) between the upper housing (3), the connector (1-12) is that disk covers class formation, by under it The connector nut (1-10) and the bonnet, (1-11) at end are affixed, and valve rod (1-7) the sealing cunning is placed in the connector In the vertical core of (1-12), affixed, the upper end extends upwardly to the upper housing with the flap connector (1-5) downwards for its lower end (3) in, the shaft (3-2) and the hook (3-1) are correspondingly arranged with the valve rod (1-7) in the upper housing (3).

4. gas emergency shut-off valve according to claim 3, characterized in that the upper end of the valve rod (1-7) is all the way up It extends at the top of the upper housing (3), affixed the drawings cap two (3-7) in the top of the valve rod (1-7) simultaneously slides and is placed in the upper housing (3) in the valve opening handle two (3-8) of top setting, the affixed small axis (2-2) of dynamic iron core (2-6) other end, the small axis (2- 2) it is pierced by control executive device (2) shell, the affixed valve opening handle one (2-1) of outermost end of the small axis (2-2) outward.

5. gas emergency shut-off valve according to claim 4, characterized in that the flap (1-4) is towards valve seat (1-3) Flat membrane (1-9) is installed on one side.

6. gas emergency shut-off valve according to claim 5, characterized in that the groove (1-7-1) is for section configuration The annular groove (1-7-1) of rectangle.

7. gas emergency shut-off valve according to claim 6, characterized in that gib head (3-1-2) back of the hook (3-1) A columnar projections (3-1-1) is arranged in portion, and upper housing (3) inner wall is provided with the columnar projections (3-1-1) corresponding position Spring base (3-5), spring two (3-4) are sleeved in the columnar projections (3-1-1) and the spring base (3-5).

8. institute's gas emergency shut-off valve according to claim 7, characterized in that contact (2-9) back side retaining ring (2-9- 1) spring one (2-8) is set between shell.

9. institute's gas emergency shut-off valve according to claim 8, characterized in that the upper housing (3) and the bonnet, Between (1-11), between the upper housing (3) and control executive device (2) shell, the upper housing (3) and the control It is all provided between command device (4) shell, between the connector (1-12) and the bonnet, (1-11) and the valve rod (1-7) Set sealing strip.