CN220435721U

CN220435721U - Special valve device for preventing leakage

Info

Publication number: CN220435721U
Application number: CN202321773027.5U
Authority: CN
Inventors: 孙庆彬; 刘斌; 丁明亮; 张国
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-07-07
Filing date: 2023-07-07
Publication date: 2024-02-02
Anticipated expiration: 2033-07-07

Abstract

The utility model discloses a special leakage-proof valve device, which comprises a descending pipe arranged on the circumferential outer wall of a gas pipeline and a sealing box connected with the outer wall of the descending pipe through a flange, wherein one end of the descending pipe is fixedly connected with a trumpet-shaped collecting port, and one end of the collecting port is fixedly connected with the circumferential outer wall of the gas pipeline; the output end of the down pipe is connected with a gate valve through a flange, and a drainer is arranged at one end of the down pipe positioned at one side of the gate valve; the inner wall of the sealing box is provided with a clamping component and a cutting component; the clamping assembly comprises an upper connecting plate, a lower connecting plate and a driving structure, wherein the upper connecting plate and the lower connecting plate are fixedly connected to the inner wall of the top of the sealing box; and the inner wall of the bottom of the sealing box is fixedly connected with a compensator. The utility model can perform online replacement of the damaged gate valve, does not generate industrial production stopping cost, can meet the actual use requirement, prevents the risk of gas leakage during the replacement of the valve, and has high practicability.

Description

Special valve device for preventing leakage

Technical Field

The utility model relates to the technical field of valves, in particular to a special leakage-proof valve device.

Background

At present, in a gas system in the metallurgical industry, condensed water in a gas pipeline is continuously discharged through a drainer, the gas pipeline is in through connection with the drainer through a down pipe, an upper valve and a lower valve for cutting off the connection between the drainer and the gas pipeline are arranged on the down pipe, wherein the upper valve of the gas pipeline drainer is easy to damage in long-time operation, the safe operation of the gas pipeline system is influenced if the upper valve is not replaced in time, but larger production stopping cost is brought when the gas pipeline system is required to be stopped for replacement, so that the gas pipeline is better selected for online replacement, a large amount of leaked and polluted environment of gas in the pipeline is easy to exist during online replacement, and potential safety hazards such as personnel poisoning are easy to appear.

Through retrieving, chinese patent application No. cn201921430995.X discloses a gas transportation is with preventing leaking valve, including the valve body, the valve body both sides set up flange, are provided with the inner tube of two flange of intercommunication in the valve body, be provided with the valve ball shell on the valve body, the valve ball shell cuts the inner tube, and the valve ball shell both sides inner tube tip stretches into in the valve ball shell, is provided with the utricule in the valve ball shell, valve ball shell top is provided with the input tube, and the input tube bottom stretches into in the valve ball shell and communicates with the utricule through the hose, the input tube outer end is connected with utricule expansion mechanism, and the body is sealed to the both sides inner tube tip about the utricule inflation shutoff. The leakage-proof valve for gas transportation in the above patent has the following disadvantages: the whole pipeline is required to be stopped to replace a damaged valve, so that certain industrial production stopping cost can be caused, and the actual use requirement cannot be met.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a special leakage-proof valve device.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the special valve device for preventing leakage comprises a descending pipe arranged on the circumferential outer wall of a gas pipeline and a sealing box connected with the outer wall of the descending pipe through a flange, wherein one end of the descending pipe is fixedly connected with a trumpet-shaped collecting port, and one end of the collecting port is fixedly connected with the circumferential outer wall of the gas pipeline; the output end of the down pipe is connected with a gate valve through a flange, and a drainer is arranged at one end of the down pipe positioned at one side of the gate valve;

the inner wall of the sealing box is provided with a clamping component and a cutting component.

As still further aspects of the utility model: the clamping assembly comprises an upper connecting plate, a lower connecting plate and a driving structure, wherein the upper connecting plate and the lower connecting plate are fixedly connected to the inner wall of the top of the sealing box.

As still further aspects of the utility model: the bottom inner wall fixedly connected with compensator of seal box is located the compensator top seal box inner wall fixedly connected with seal chamber, and the inner wall in seal chamber is run through to the one end of downcomer, and drive arrangement sets up in the inside in seal chamber.

As still further aspects of the utility model: the driving structure comprises at least three gears rotationally connected to the inner wall of the bottom of the sealing cavity, a driving toothed belt sleeved on the outer wall of the three gears, a limiting column fixedly connected to two horizontal opposite positions of the gears, an adjusting column fixedly connected to the top end of the limiting column, a driving belt rotationally connected to the inner wall of the bottom of the sealing cavity, and an adjusting hinge connected with the input end of the driving belt through a coupler, wherein the inner wall of the driving toothed belt is meshed with the outer wall of the gears, the other end of the driving belt is rotationally connected to the inner wall of the bottom of a U-shaped plate fixedly connected to the outer wall of one side of the sealing box, and the output end of the driving belt is connected with the bottom end of another gear through a connecting shaft;

the outer wall of the adjusting column is connected with the inner wall of the lower connecting plate through threads.

As still further aspects of the utility model: the inner wall of the bottom of the sealing cavity is rotationally connected with a guide pillar, and the outer wall of the guide pillar is attached to the outer side face of the driving toothed belt.

As still further aspects of the utility model: the cutting assembly comprises a blind plate inserted into the inner wall of the sealing box and a push rod fixedly connected to one side face of the blind plate, the outer wall of the push rod and one side face of the sealing box form left-right sliding fit, and the blind plate corresponds to the position between the upper connecting plate and the lower connecting plate.

As still further aspects of the utility model: the push rod is fixedly connected with a clamping ring towards one end face of the sealing box, and a clamping groove matched with the clamping ring is reserved on the outer wall of one side of the sealing box corresponding to the position of the clamping ring.

As still further aspects of the utility model: the bottom surface of the lower connecting plate and the upper surface of the sealing cavity are fixedly connected with the same corrugated pipe.

As still further aspects of the utility model: the outer wall of one side of the sealing box is fixedly connected with a pressure detection valve group;

and the outer wall of the bottom of the sealing box is fixedly connected with a sewage outlet.

Compared with the prior art, the utility model provides a special leakage-proof valve device, which has the following beneficial effects:

1. this prevent leaking special valve device through set up the seal box that has clamping component and cuts the subassembly structure on the downcomer between gate valve and gas pipeline, can realize effectively stopping the downcomer for under the condition that does not influence gas pipeline transport medium, can carry out on-line replacement to the gate valve that appears damaging, can not produce industry production cost of stopping, can satisfy the in-service use demand, prevents the risk that gas leakage appears during the valve replacement, the practicality is high.

2. This prevent leaking special valve device leaves the clearance of inserting of blind plate between upper junction plate and lower junction plate back, manual inwards promotes the push rod for the blind plate inserts between upper junction plate and the lower junction plate, then reverse rotation adjusts the pivot, makes down the junction plate shift up, realizes the clamp operation to its upper structure, thereby can guarantee the firm stifled shutoff of blind plate to upper junction plate delivery outlet, and it is convenient to adjust, provides stable basis for changing the gate valve.

3. This prevent leaking special valve device, when cutting the upper junction plate delivery outlet, in going into the draw-in groove with the snap ring card on the push rod, can constantly guarantee that the blind plate has been shutoff to the upper junction plate delivery outlet this moment, but also can avoid the push rod to take place passive back to move and withdraw, guarantee the steadiness of blind plate service position, simple structure can be practical in practical operation.

Drawings

FIG. 1 is a schematic view of the whole structure of a special valve device for preventing leakage according to the present utility model;

FIG. 2 is a schematic cross-sectional view of a seal box of a valve device for preventing leakage according to the present utility model;

FIG. 3 is a schematic cross-sectional view of a sealing case of a valve device for preventing leakage according to another embodiment of the present utility model;

FIG. 4 is a schematic view of a blind plate structure of a valve device for preventing leakage according to the present utility model;

fig. 5 is a schematic structural view of the connection state of the driving toothed belt and the adjusting column of the special valve device for preventing leakage.

In the figure: 1 gas pipeline, 2 collecting port, 201 downcomer, 3 seal box, 4 gate valve, 5 drainer, 6 pressure detection valves, 7 drain, 8 push rod, 801 snap ring, 802 blind plate, 803 draw-in groove, 9 adjusting pivot, 901U template, 902 drive belt, 10 driving toothed belt, 1001 spacing post, 1002 adjusting post, 11 compensator, 12 upper connecting plate, 13 lower connecting plate, 14 bellows, 15 guide pillar.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Example 1

The special valve device for preventing leakage comprises a descending pipe 201 arranged on the circumferential outer wall of a gas pipeline 1 and a sealing box 3 connected to the outer wall of the descending pipe 201 through a flange, wherein one end of the descending pipe 201 is welded with a horn-shaped collecting port 2, and one end of the collecting port 2 is fixedly connected to the circumferential outer wall of the gas pipeline 1; the output end of the down pipe 201 is connected with a gate valve 4 through a flange, and a drainer 5 is arranged at one end of the down pipe 201 positioned at one side of the gate valve 4; by arranging the sealing box 3 on the down tube 201 between the gate valve 4 and the gas pipeline 1, the down tube 201 can be effectively stopped, so that the gate valve 4 damaged can be replaced on line under the condition that the medium conveying of the gas pipeline 1 is not influenced, and the production requirement is met.

Wherein, the gate valve 4 and the drainer 5 both refer to the prior art, and are not described in detail herein;

in order to facilitate the online replacement of the gate valve 4, as shown in fig. 1-5, the inner wall of the sealing box 3 is provided with a clamping assembly and a cutting assembly, wherein the clamping assembly comprises an upper connecting plate 12, a lower connecting plate 13 and a driving structure, wherein the upper connecting plate 12 and the lower connecting plate 13 are fixed on the inner wall of the top of the sealing box 3 through bolts;

further, the inner wall of the bottom of the sealing box 3 is fixedly connected with a compensator 11, and the compensation amount of the compensator 11 can be 15mm; the inner wall of the sealing box 3 above the compensator 11 is fixedly connected with a sealing cavity, one end of the down pipe 201 penetrates through the inner wall of the sealing cavity, and the driving structure is arranged in the sealing cavity;

preferably, as shown in fig. 2, the lower connecting plate 13 is placed on the inner wall of the sealing box 3, and both are adapted in size; so that the lower connecting plate 13 can be displaced up and down only in the sealing box 3.

Preferably, the driving structure comprises at least three gears rotatably connected to the inner wall of the bottom of the sealing cavity, a driving toothed belt 10 sleeved on the outer wall of the three gears, a limit column 1001 fixed on two horizontal opposite positions through bolts, an adjusting column 1002 welded on the top end of the limit column 1001, a driving belt 902 rotatably connected to the inner wall of the bottom of the sealing cavity, and an adjusting pivot 9 connected with the input end of the driving belt 902 through a coupler, wherein the inner wall of the driving toothed belt 10 is meshed with the outer wall of the gears, the other end of the driving belt 902 is rotatably connected to the bottom inner wall of a U-shaped plate 901 fixedly connected to the outer wall of one side of the sealing box 3, and the output end of the driving belt 902 is connected with the bottom end of another gear which is not connected with the limit column 1001 through a connecting shaft;

preferably, the outer wall of the adjusting column 1002 is connected with the inner wall of the lower connecting plate 13 by threads;

further preferably, the height of the adjusting column 1002 is smaller than the height of the lower connecting plate 13, so that the lower connecting plate 13 can move up and down under the action of the adjusting column 1002, and meanwhile the adjusting column 1002 is prevented from protruding out of the lower connecting plate 13, and the flatness of the upper surface of the lower connecting plate 13 is ensured; the manual rotation adjusting hub 9 drives the driving toothed belt 10 to drive through the driving belt 902, so that the two limiting columns 1001 drive the adjusting columns 1002 to synchronously rotate, and the lower connecting plate 13 can move up and down along the adjusting columns 1002 in the sealing box 3 under the drive of threads.

As a supplement, the inner wall of the bottom of the sealing cavity is rotationally connected with a guide post 15 for extruding and orienting the driving toothed belt 10, so that the driving toothed belt 10 is integrally formed into a V shape, the driving toothed belt 10 is prevented from contacting the outer wall of the down tube 201 penetrating into the sealing cavity, and the outer wall of the guide post 15 is attached to the outer side surface of the driving toothed belt 10;

preferably, the bottom surface of the lower connecting plate 13 and the upper surface of the sealing cavity are welded with the same corrugated pipe 14; the bellows 14 is stretched and deformed along with the lifting of the lower connecting plate 13, so that the lumen below the lower connecting plate 13 is always sealed, and leakage of the liquid is prevented.

Still further, the cutting assembly includes a blind plate 802 inserted into the inner wall of the sealing box 3, and a push rod 8 welded to one side of the blind plate 802, where the outer wall of the push rod 8 and one side of the sealing box 3 form a left-right sliding fit, and the blind plate 802 corresponds to a position between the upper connecting plate 12 and the lower connecting plate 13; when the gate valve 4 needs to be replaced, the lower connecting plate 13 is adjusted to move downwards through the driving structure until the bottom surface of the lower connecting plate 13 is attached to the top end of the limiting column 1001, and the adjusting column 1002 is completely screwed into the lower connecting plate 13 at this time, so that an inserting gap of the blind plate 802 can be reserved between the upper connecting plate 12 and the lower connecting plate 13, then the push rod 8 is manually pushed inwards, so that the blind plate 802 is inserted between the upper connecting plate 12 and the lower connecting plate 13, and then the adjusting pivot 9 is reversely rotated, so that the lower connecting plate 13 moves upwards, the clamping operation of the upper structure is realized, the firm sealing of the blind plate 802 on the output port of the upper connecting plate 12 can be ensured, the adjustment is convenient, and a stable foundation is provided for replacing the gate valve 4.

Preferably, the blind plate 802 is T-shaped, and can seal the inner cavity of the sealing box 3 behind the upper connecting plate 12 and the lower connecting plate 13.

Further preferably, a clamping ring 801 is welded on one end surface of the push rod 8 facing the sealing box 3, and a clamping groove 803 matched with the clamping ring 801 is reserved on the outer wall of one side of the sealing box 3 corresponding to the position of the clamping ring 801; when the output port of the upper connecting plate 12 is cut off, the clamping ring 801 on the push rod 8 is clamped into the clamping groove 803, so that the blind plate 802 can be continuously ensured to be blocked for the output port of the upper connecting plate 12 at the moment, the push rod 8 can be prevented from being passively moved backwards and retracted, and the stability of the using position of the blind plate 802 is ensured.

The structure of the utility model is basically made of stainless steel, and can cope with gas with different qualities and improve corrosion resistance.

Working principle: by arranging the sealing box 3 on the down tube 201 between the gate valve 4 and the gas pipeline 1, the down tube 201 can be effectively stopped, so that the gate valve 4 with damage can be replaced on line under the condition that the medium is conveyed by the gas pipeline 1 is not influenced, and the device is specifically operated as follows: the manual rotation adjusting pivot 9 drives the driving toothed belt 10 to drive through the driving belt 902, so that the two limiting columns 1001 drive the adjusting columns 1002 to synchronously rotate, and then the lower connecting plate 13 can move downwards in the sealing box 3 along the adjusting columns 1002 under the drive of threads until the bottom surface of the lower connecting plate 13 is attached to the top end of the limiting columns 1001, at the moment, the adjusting columns 1002 are completely screwed into the lower connecting plate 13, then the push rod 8 is manually pushed inwards, the blind plate 802 is inserted between the upper connecting plate 12 and the lower connecting plate 13, and then the reverse rotation adjusting pivot 9 is carried out, so that the lower connecting plate 13 moves upwards, and the clamping operation on the upper structure of the blind plate 802 is realized.

Example 2

A leak-proof dedicated valve device, as shown in fig. 1-2, for detecting pressure changes in the seal box 3; this example complements the following on the basis of example 1: the outer wall of one side of the sealing box 3 is fixed with a pressure detection valve group 6 through bolts, and the pressure detection valve group consists of a pressure sensor and a switch valve; the pressure detection valve group 6 is arranged for detecting and adjusting the pressure change in the sealing box 3 before and after blocking the output port of the upper connecting plate 12, thereby ensuring the stability of the medium conveying operation before and after cutting.

Further, a drain outlet 7 with a valve is fixed on the outer wall of the bottom of the sealing box 3 through bolts; for discharging the liquid stored in the sealed box 3.

Working principle: by arranging the sealing box 3 on the down tube 201 between the gate valve 4 and the gas pipeline 1, the down tube 201 can be effectively stopped, so that the gate valve 4 with damage can be replaced on line under the condition that the medium is conveyed by the gas pipeline 1 is not influenced, and the device is specifically operated as follows: the pressure change in the sealing box 3 is detected and regulated to be normal in advance through the pressure detection valve group 6, then the regulating pivot 9 is manually rotated, and then the driving toothed belt 10 is driven by the driving belt 902 to drive, so that the two limiting columns 1001 drive the regulating columns 1002 to synchronously rotate, and further the lower connecting plate 13 can move downwards in the sealing box 3 along the regulating columns 1002 under the drive of threads until the bottom surface of the lower connecting plate 13 is attached to the top end of the limiting columns 1001, at the moment, the regulating columns 1002 are completely screwed into the lower connecting plate 13, then the push rod 8 is manually pushed inwards, the blind plate 802 is inserted between the upper connecting plate 12 and the lower connecting plate 13, and then the regulating pivot 9 is reversely rotated, so that the lower connecting plate 13 moves upwards, and the clamping operation of the upper structure of the blind plate is realized; solves the safety risk caused by the gas leakage of the valve replacement, and has the characteristics of gas corrosion resistance, equipment intrinsically safety improvement and long-term continuous use.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The special leakage-proof valve device comprises a descending pipe (201) arranged on the circumferential outer wall of a gas pipeline (1) and a sealing box (3) connected with the outer wall of the descending pipe (201) through a flange, and is characterized in that one end of the descending pipe (201) is fixedly connected with a trumpet-shaped collecting port (2), and one end of the collecting port (2) is fixedly connected with the circumferential outer wall of the gas pipeline (1); the output end of the descending pipe (201) is connected with a gate valve (4) through a flange, and a drainer (5) is arranged at one end of the descending pipe (201) positioned at one side of the gate valve (4);

the inner wall of the sealing box (3) is provided with a clamping component and a cutting component.

2. A leak-proof dedicated valve arrangement according to claim 1, characterized in that the clamping assembly comprises an upper connection plate (12), a lower connection plate (13) fixedly connected to the inner wall of the top of the sealing box (3), and a driving structure.

3. The special valve device for preventing leakage according to claim 2, wherein the compensator (11) is fixedly connected to the inner wall of the bottom of the sealing box (3), the sealing cavity is fixedly connected to the inner wall of the sealing box (3) above the compensator (11), one end of the down tube (201) penetrates through the inner wall of the sealing cavity, and the driving structure is arranged in the sealing cavity.

4. A special valve device for preventing leakage according to claim 3, wherein the driving structure comprises at least three gears rotatably connected to the inner wall of the bottom of the sealing cavity, a driving toothed belt (10) sleeved on the outer walls of the three gears, a limit column (1001) fixedly connected to two horizontal opposite positions of the three gears, an adjusting column (1002) fixedly connected to the top end of the limit column (1001), a driving belt (902) rotatably connected to the inner wall of the bottom of the sealing cavity, and an adjusting pivot (9) connected with the input end of the driving belt (902) through a coupling, wherein the inner wall of the driving toothed belt (10) is meshed with the outer wall of the gears, the other end of the driving belt (902) is rotatably connected to the bottom inner wall of a U-shaped plate (901) fixedly connected to the outer wall of one side of the sealing box (3), and the output end of the driving belt (902) is connected with the bottom end of the other gear through a connecting shaft;

the outer wall of the adjusting column (1002) is connected with the inner wall of the lower connecting plate (13) through threads.

5. The special valve device for preventing leakage according to claim 4, wherein the inner wall of the bottom of the sealing cavity is rotatably connected with a guide pillar (15), and the outer wall of the guide pillar (15) is attached to the outer side surface of the driving toothed belt (10).

6. The special valve device for preventing leakage according to claim 5, wherein the cutting-off assembly comprises a blind plate (802) inserted into the inner wall of the sealing box (3), and a push rod (8) fixedly connected to one side surface of the blind plate (802), the outer wall of the push rod (8) and one side surface of the sealing box (3) form a left-right sliding fit, and the blind plate (802) corresponds to the position between the upper connecting plate (12) and the lower connecting plate (13).

7. The special valve device for preventing leakage according to claim 6, wherein a clamping ring (801) is fixedly connected to an end face of the push rod (8) facing the sealing box (3), and a clamping groove (803) matched with the clamping ring (801) is reserved on the outer wall of one side of the sealing box (3) corresponding to the position of the clamping ring (801).

8. A special valve device for preventing leakage according to claim 7, characterized in that the bottom surface of the lower connecting plate (13) and the upper surface of the sealing cavity are fixedly connected with the same corrugated pipe (14).

9. The special leakage-proof valve device according to claim 1, wherein the outer wall of one side of the sealing box (3) is fixedly connected with a pressure detection valve group (6);

the outer wall of the bottom of the sealing box (3) is fixedly connected with a sewage outlet (7).