CN106763763B

CN106763763B - Safety interlocking device for quick-opening blind plate

Info

Publication number: CN106763763B
Application number: CN201710174314.7A
Authority: CN
Inventors: 郑安力; 李文庆; 颜立强
Original assignee: China Petroleum Technology & Development Corp; Terrence Energy Co ltd
Current assignee: China Petroleum Technology Development Co ltd; Terrence Energy Co ltd
Priority date: 2017-03-22
Filing date: 2017-03-22
Publication date: 2019-08-16
Anticipated expiration: 2037-03-22
Also published as: CN106763763A

Abstract

A safety interlocking device for a quick-opening blind plate comprises a locking ring with a notch, a tensioning block corresponding to the notch of the locking ring, an interlocking rod connected with the blind plate and a handle matched with the interlocking rod, wherein a limiting cavity, a piston cavity and a vent hole which are communicated are arranged in the interlocking rod from top to bottom, the blind plate is provided with a through hole, the lower end of the interlocking rod is fixed in the through hole, a piston rod is arranged in the piston cavity, the upper end of the piston rod extends into the limiting cavity, a spring is sleeved on the piston rod, a step is arranged on the piston rod, the upper end of the spring is connected with the interlocking rod, the lower end of the spring is connected with the step, a connecting plate is fixed on the tensioning block and is fixedly connected with the interlocking rod, an operating hole matched with the handle is arranged at the upper end of the interlocking rod, and the operating hole is communicated with the limiting cavity.

Description

A kind of safety interlock of fast opening blind

Technical field

The present invention relates to natural gases etc. inflammable, explosive industry device safety interlock, especially a kind of fast opening blind Safety interlock.

Background technique

Currently, in the corollary equipments such as pressure vessel, pressure pipeline, fast opening blind is a kind of common quickly to open or close Close device, according to the requirement of " fixed safe technology of pressure vessel Supervision Code ", fast opening type pressure container should meet with The safety interlocking function of lower requirement: 1, closing position when quick operating valve reaches predetermined, can booste operation；2, when in pressure vessel Portion's pressure discharges completely, can open quick operating valve.

The country fully meets the safety interlock of above-mentioned requirements at present, and the mode for being generally used electrical control is realized, Need to be equipped with power supply system and corresponding control system, inflammable for natural gas etc., explosive industry, there are some device contexts not to have Have power supply lead to not using and electrical component need to consider explosion-proof, lead to problems such as cost higher.

Summary of the invention

The object of the present invention is to provide a kind of safe and reliable, disengaging power supply systems to be also suitable for the inflammable and explosive row such as natural gas The safety interlock of the fast opening blind of industry.

Realize that the technical solution of the object of the invention is as follows:

A kind of safety interlock of fast opening blind, including with lock ring jaggy, corresponding with the notch of lock ring Tight block, blocking lever connect with blind plate and the handle with blocking lever cooperation, from top to bottom equipped with being connected to inside the blocking lever Limit chamber, plunger shaft and venthole, the blind plate is equipped with through-hole, and the blocking lever lower end is fixed in through-hole, the work Fill in it is intracavitary be equipped with piston rod, the piston rod upper end protrudes into limit chamber, and the upper cover of piston rod is equipped with spring, the piston rod Upper setting step, the spring upper end are connect with blocking lever, and lower end is connect with step, are fixed with connecting plate in the tensioning block, The connecting plate is fixedly connected with blocking lever, and the blocking lever upper end is equipped with the handle hole that cooperate with handle, the handle hole and Limit chamber connection.

After adopting the above structure, blind plate is placed on the opening of the equipment such as pressure vessel or pressure pipeline, lock ring upper end Pushed against with opening, lower end and blind plate push against, and the indentation, there that tensioning block fills in lock ring makes lock ring maintain expanded state, blocking lever this When be fixedly connected with blind plate, the high pressure gas in the equipment such as pressure vessel, pressure pipeline enters in venthole from through-hole, push live Stopper rod moves upwards, and piston rod upper end rises at handle hole, keeps handle intracavitary by handle hole insertion operation, reminds behaviour The case where still having residual pressure in author's equipment, blind plate is opened in the case where avoiding again container from having residual pressure, avoid equipment Injury of the interior gas to operator and the pollution to environment, when air pressure is close to atmospheric pressure in equipment, work of the piston rod in spring Firmly decline resets, and handle can be inserted in handle hole and take out the related tensioning block of blocking lever at this time, and lock ring restores normal shape It is taken out after state, i.e., openable blind plate, operation of the present invention is simple and convenient, securely and reliably.

Preferably, in order to facilitate the operation of lock ring, the lock ring includes that with ring body jaggy and lacking for ring body is arranged in Oral area position can simultaneously shrink ring body internal diameter or widened retaining mechanism.

Preferably, ring body is shunk or expanded for convenience, and the retaining mechanism includes being separately positioned on ring body gap portions First link block and the second link block at both ends, support rod and connecting rod with the rotation connection of the first link block, the connection Bar one end and the second link block are rotatablely connected, and the other end and support rod are rotatablely connected, and the post upper is equipped with handle socket.

Preferably, in order to promote the airtight performance of plunger shaft, facilitate high pressure gas to push piston rod, improve the safety of device Property, the piston-rod lower end is equipped with sealing ring.

Preferably, it prevents handle from being inserted into limit chamber in order to facilitate piston rod upper end, is equipped with limited block, institute in the limit chamber Limited block is stated to be fixedly connected with piston rod upper end.

Preferably, in order to facilitate the assembly of blocking lever, the blocking lever includes upper housing and lower case, and the upper housing is set Limit chamber and upper piston chamber are set, the lower case setting lower piston chamber and venthole, the upper housing are fixedly connected with lower case, The upper piston chamber and lower piston chamber surround to form plunger shaft.

Preferably, in order to facilitate the assembly of lower case, the lower case is equipped with external screw thread, and the through-hole is equipped with internal screw thread, The lower case is connect with through hole whorl.

Preferably, in order to facilitate the assembly of connecting plate and lower case, there are two stop nut, institutes for suit in the lower case It states connecting plate to be sleeved in lower case, the connecting plate is constrained between two stop nuts, the connecting plate and lower case Rotation connection.

Detailed description of the invention

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Fig. 1 is the structural diagram of the present invention.

Fig. 2 is assembling structure schematic diagram of the invention.

Fig. 3 is assembling plan view of the invention.

Fig. 4 is lock ring structural schematic diagram of the invention.

In figure: 1 is lock ring, and 2 be tensioning block, and 3 be blind plate, and 4 be blocking lever, and 41 be upper housing, and 42 be lower case, and 5 be pressure Force container, 6 be operating cavity, and 61 be handle hole, and 7 be plunger shaft, and 71 be upper piston chamber, and 72 be lower piston chamber, and 8 be venthole, and 9 are Handle, 10 be piston rod, and 11 be sealing ring, and 12 be limited block, and 13 be step, and 14 be spring, and 15 be stop nut, and 16 be connection Plate, 17 be through-hole, and 18 be ring body, and 19 be the first link block, and 20 be the second link block, and 21 be support rod, and 22 be connecting rod, and 23 are Handle socket.

Specific embodiment

By Fig. 1 to Fig. 3 it is found that a kind of safety interlock of fast opening blind of the present invention include with lock ring 1 jaggy, Tensioning block 2 corresponding with the notch of lock ring 1, the blocking lever 4 being connect with blind plate 3 and the handle 9 cooperated with blocking lever 4, blind plate 3 The opening of pressure vessel 5 is set, and lock ring 1 is arranged on blind plate 3, and tensioning block 2 fills in the indentation, there of lock ring 1,1 lower end of lock ring Pushed against with blind plate 3, upper end and pressure vessel 5 push against, and blocking lever 4 includes upper housing 41 and lower case 42, upper housing 41 from it is upper it Under set gradually the operating cavity 6 and upper piston chamber 71 of connection, lower case 42 sets gradually the lower piston chamber 72 of connection from top to bottom With venthole 8,41 upper end of upper housing is equipped with the handle hole 61 being connected to operating cavity 6, and handle hole 61 is used cooperatively with handle 9, on Shell 41 is fixedly connected with lower case 42, and upper piston chamber 71 and lower piston chamber 72 surround to form plunger shaft 7, setting in plunger shaft 7 Sealing ring 11 is arranged in piston rod 10,10 lower end of piston rod, and upper end is protruded into operating cavity 6 and is fixedly installed limited block 12, piston Step 13, pocketed springs 14 on piston rod 10 is arranged in bar 10, and 14 upper end of spring is connect with blocking lever 4, and lower end is connect with step 13, There are two stop nuts 15,16 one end of connecting plate to be welded in tensioning block 2 for suit in lower case 42, and the other end is sleeved on lower case On 42, connecting plate 16 constrains in two stop nuts 15, and connecting plate 16 and lower case 42 are rotatablely connected, and the lower end of lower case 42 is set There is external screw thread, the through-hole 17 on blind plate 3 is equipped with internal screw thread, and the lower case 42 is threadedly coupled with through-hole 17.

As shown in Figure 4, lock ring 1 include with ring body 18 jaggy and be arranged in ring body 18 gap portions and can be by ring 18 internal diameter of body is shunk or widened retaining mechanism, and the retaining mechanism includes be separately positioned on 18 gap portions both ends of ring body the One link block 19 and the second link block 20, support rod 21 and connecting rod 22 with the rotation connection of the first link block 19, the company 22 one end of extension bar and the second link block 20 are rotatablely connected, and the other end and support rod 21 are rotatablely connected, and 21 upper end of support rod is set There is handle socket 23.

When the invention works, blind plate is placed on the opening of the equipment such as pressure vessel or pressure pipeline, and retaining mechanism makes Ring body expansion, ring body upper end and equipment opening eat abutting, and lower end and blind plate push against, and the indentation, there that tensioning block fills in lock ring makes lock ring Expanded state is maintained, blocking lever is fixedly connected with blind plate at this time, and the high pressure gas in the equipment such as pressure vessel, pressure pipeline is from logical Hole enters in venthole, pushes piston rod to move upwards, piston rod upper end rises at handle hole, makes handle that can not pass through operation Hole insertion operation is intracavitary, and reminding in operator's equipment still has residual pressure, beats in the case where avoiding again container from having residual pressure The case where open blind plate, avoids injury of the gas to operator and the pollution to environment in equipment, and air pressure is close to atmosphere in equipment When pressure, piston rod declines reset under the force of a spring, and handle can be inserted operation and within the walls take out blocking lever at this time, this hair It is bright simple to operate, securely and reliably.

The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all utilizations Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content is applied directly or indirectly in other correlations Technical field, be included within the scope of the present invention.

Claims

1. a kind of safety interlock of fast opening blind, it is characterised in that: including the notch with lock ring jaggy and lock ring Corresponding tensioning block, the blocking lever being connect with blind plate and the handle with blocking lever cooperation, inside the blocking lever from top to bottom Limit chamber, plunger shaft and venthole equipped with connection, the blind plate are equipped with through-hole, and the blocking lever lower end is fixed on through-hole It is interior, piston rod is equipped in the plunger shaft, the piston rod upper end is protruded into limit chamber, and the upper cover of piston rod is equipped with spring, Step is set on the piston rod, and the spring upper end is connect with blocking lever, and lower end is connect with step, fixed in the tensioning block There is connecting plate, the connecting plate is fixedly connected with blocking lever, and the blocking lever upper end is equipped with the handle hole cooperated with handle, described Handle hole is connected to limit chamber；The blocking lever includes upper housing and lower case, and limit chamber and upper piston is arranged in the upper housing Chamber, the lower case setting lower piston chamber and venthole, the upper housing are fixedly connected with lower case, and the upper piston chamber is under Plunger shaft surrounds to form plunger shaft；The lower case is equipped with external screw thread, and the through-hole is equipped with internal screw thread, the lower case and through-hole It is threadedly coupled；There are two stop nuts, the connecting plate to be sleeved in lower case for suit in the lower case, the connecting plate quilt It constrains between two stop nuts, the connecting plate and lower case are rotatablely connected；The lock ring includes with ring body jaggy And the gap portions of ring body are set and ring body internal diameter can be shunk or widened retaining mechanism；The retaining mechanism includes point First link block and the second link block, the support rod with the rotation connection of the first link block at ring body gap portions both ends are not set And connecting rod, described connecting rod one end and the second link block are rotatablely connected, the other end and support rod are rotatablely connected, the support Bar upper end is equipped with handle socket；The piston-rod lower end is equipped with sealing ring；Limited block, the limited block are equipped in the limit chamber It is fixedly connected with piston rod upper end.