阅读说明：本技术 一种监测膏体充填管路压力的泄压装置及控制方法 (Pressure relief device for monitoring pressure of paste filling pipeline and control method ) 是由 张心峰 刘刚 于 2019-11-20 设计创作，主要内容包括：一种监测膏体充填管路压力的泄压装置及控制方法,属于管路压力的泄压装置及控制方法。泄压装置包括：泄浆阀和压力监测器；泄浆阀和压力监测器均安装在主管道上。压力监测器套筒的一端固定连接在主管道上,另一端连接有堵头；在套筒有活塞,在活塞和堵头的侧壁上有密封,位于与套筒接触面之间；在堵头上有快速密封接头的接口,快速密封接头连接在堵头与三通之间,在三通的另两个端口,一个端口连接有耐震压力表,一个端口为压力传感器接口,在压力传感器接口上连接有压力传感器。优点：本发明结构紧凑,耐磨损,耐高压,密封性好,拆装和维修方便,且操作简单省力。不仅能够监测前部的管道压力,还能够启动泄压装置对管路进行保护。(A pressure relief device for monitoring the pressure of a paste filling pipeline and a control method belong to the pressure relief device for pipeline pressure and the control method. The pressure relief device comprises: a slurry discharge valve and a pressure monitor; the slurry discharge valve and the pressure monitor are both arranged on the main pipeline. One end of the pressure monitor sleeve is fixedly connected to the main pipeline, and the other end of the pressure monitor sleeve is connected with a plug; the sleeve is provided with a piston, and the side walls of the piston and the plug are provided with seals which are positioned between the contact surfaces of the piston and the plug and the sleeve; the quick sealing joint is connected between the plug and the tee joint, one port of the other two ports of the tee joint is connected with a shock-resistant pressure gauge, the other port of the tee joint is a pressure sensor interface, and the pressure sensor interface is connected with a pressure sensor. The advantages are that: the invention has the advantages of compact structure, wear resistance, high pressure resistance, good sealing performance, convenient assembly, disassembly and maintenance, simple operation and labor saving. Not only can monitor anterior pipeline pressure, can also start pressure relief device and protect the pipeline.)

1. The utility model provides a pressure relief device of monitoring lotion filling line pressure which characterized by: the pressure relief device comprises: a slurry discharge valve and a pressure monitor; the slurry discharge valve and the pressure monitor are both arranged on the main pipeline.

2. The pressure relief device for monitoring the pressure of a paste filling pipeline according to claim 1, wherein: the pressure monitor comprises: the device comprises a piston, a sleeve, a plug, a shock-proof pressure gauge, a quick sealing joint, a tee joint and a pressure sensor interface; one end of the sleeve is fixedly connected to the main pipeline, and the other end of the sleeve is connected with a plug; the sleeve is provided with a piston, and the side walls of the piston and the plug are provided with seals which are positioned between the contact surfaces of the piston and the plug and the sleeve; the quick sealing joint is connected between the plug and the tee joint, one port of the other two ports of the tee joint is connected with a shock-resistant pressure gauge, the other port of the tee joint is a pressure sensor interface, and the pressure sensor interface is connected with a pressure sensor.

3. The pressure relief device for monitoring the pressure of a paste filling pipeline according to claim 1, wherein: the slurry discharge valve comprises: the hydraulic oil-out device comprises a valve body, a sealing head, a sleeve, an inner cylinder body, a hoop, a first oil-in and oil-out joint, a connecting cylinder, an outer cylinder body, an end cover, a core shaft, a lifting lug, a first cavity, a second cavity, a third cavity, a second oil-in and oil-out joint and a slurry discharge port; the side wall of the valve body is provided with a slurry outlet; one end of the valve body is fixedly connected with a main pipeline, the other end of the valve body is connected with an outer cylinder body through a hoop, the rear end of the outer cylinder body is connected with an end cover, the end cover is provided with a through hole, a second oil inlet and outlet connector is connected to the through hole of the end cover, and the inner cavity of the outer cylinder body in the through hole of the end cover is a third cavity; the first oil inlet and outlet joint is arranged on the outer cylinder body and is positioned at the position of the second cavity;

a sleeve and an inner cylinder body are arranged in the valve body; a sealing head is arranged in the sleeve, the rear end of the inner cylinder body is connected with a connecting cylinder, the inner end of the connecting cylinder is connected with an inner mandrel, and the connecting cylinder and the mandrel are both positioned in the inner cylinder body; an oil through hole is formed in the inner cylinder body, an oil inlet and an oil outlet at one end of the oil through hole are located at the position of the second cavity, and an oil inlet and an oil outlet at the other end of the oil through hole are located at the position of the first cavity; the first cavity is positioned in the cavity between the inner cylinder body and the mandrel; the sealing head slides in the valve body and the sleeve in a sealing way; the rear part of the inner cylinder body hermetically slides in the outer cylinder body, and the front end of the inner cylinder body is positioned in the valve body; the mandrel slides in the inner cylinder body in a sealing way, and the front end of the mandrel pushes the sealing head to slide in a sealing way.

4. The control method for monitoring the pressure relief device of the paste filling pipeline, which is adopted by the claim 1, is characterized in that: the control method adopting the pressure relief device comprises the following steps:

the opening or closing of the slurry discharge valve is realized by controlling two oil inlet and outlet ports of the first oil inlet and outlet joint and the second oil inlet and outlet joint, the remote and on-site pipeline pressure monitoring is realized by the pressure sensor, and the remote and on-site dual operation of the slurry discharge valve improves the safety of a filling pipeline system;

the valve body is connected with the main pipeline, and the sealing head and the outer cylinder body are sealed by a U-shaped sealing ring, so that the sealing property of the whole pipeline is ensured; when the stop valve in front of the main pipeline is in a stop state or the pressure of the main pipeline is overlarge, the sealing head is pushed to the rear, the slurry discharging port is communicated with the main pipeline, and slurry in the main pipeline is discharged along the slurry discharging port of the bypass;

the core shaft and the sealing head are in threaded connection, the core shaft and the inner cylinder sleeve are sealed in a U-shaped and combined sealing mode, when oil enters the first oil inlet and outlet joint, hydraulic oil enters the first cavity, the core shaft is pushed to move and drive the sealing head to move simultaneously, the sealing head enters the sleeve, the sealing of the sealing head is protected by the sleeve, and then the sealing head moves along with the inner cylinder sleeve to open the grout outlet;

the connecting cylinder is in threaded connection with the inner cylinder sleeve, an oil inlet and an oil outlet are formed in the middle of the connecting cylinder, the first cavity is communicated with the second cavity, when the second oil inlet and outlet connector has oil, the inner cylinder sleeve is pushed to move integrally, hydraulic oil in the second cavity can push the mandrel to move after the inner cylinder sleeve is in place, and therefore the sealing head is pushed out of the sleeve to seal the valve body.

Technical Field

The invention relates to a pressure relief device for pipeline pressure and a control method, in particular to a pressure relief device for monitoring the pressure of a paste filling pipeline and a control method.

Background

Along with the increase of the backfill requirements of coal mines, in the process of filling underground paste, because the backfill working surfaces are more, the pipelines are longer, various devices and working surfaces in the system are provided with various valve bodies, the pipeline pressure can be suddenly increased due to uncertain fault factors such as the conditions of the devices or the working surfaces, in order to protect the safety of the filling system, the pressure in the pipelines needs to be quickly released immediately, the paste in the pipelines is discharged into a paste discharge pit, in addition, if a certain section of pipeline of the working surfaces breaks down, the paste in the pipelines can also be discharged, the phenomenon that the paste stays in the pipeline for too long time to cause pipe blockage can be avoided, a device capable of monitoring the pressure of the paste filling pipeline and relieving the pressure is needed, and because the pressure of the filling pipeline can reach 10MPa, the device is required to bear high pressure, and is large in caliber and is not afraid of abrasion, Compact structure, simple operation, convenient disassembly and maintenance, and the like.

At present, no device capable of monitoring the pressure and the pressure relief of a paste filling pipeline under a coal mine exists in the market, and many common devices for monitoring the pressure of the paste filling pipeline cannot meet the requirements of high pressure, small size, simple structure, suitability for paste media under the coal mine, wear resistance and simplicity in operation and maintenance.

Disclosure of Invention

The invention aims to provide a pressure relief device for monitoring the pressure of a paste filling pipeline and a control method, which can quickly switch and ensure the safety of a pipeline and the discharge of slurry from the pipeline, and avoid the damage of overlarge pipeline pressure to the pipeline and the solidification and pipe blockage caused by overlong residence time of the slurry in the pipeline, thereby ensuring the safety of the whole filling system.

The purpose of the invention is realized as follows: the invention comprises the following steps: a pressure relief device and a control method using the same.

The pressure relief device comprises: a slurry discharge valve and a pressure monitor; the slurry discharge valve and the pressure monitor are both arranged on the main pipeline.

The pressure monitor comprises: the device comprises a piston, a sleeve, a plug, a shock-proof pressure gauge, a quick sealing joint, a tee joint and a pressure sensor interface; one end of the sleeve is fixedly connected to the main pipeline, and the other end of the sleeve is connected with a plug; the sleeve is provided with a piston, and the side walls of the piston and the plug are provided with seals which are positioned between the contact surfaces of the piston and the plug and the sleeve; the quick sealing joint is connected between the plug and the tee joint, one port of the other two ports of the tee joint is connected with a shock-resistant pressure gauge, the other port of the tee joint is a pressure sensor interface, and the pressure sensor interface is connected with a pressure sensor.

The slurry discharge valve comprises: the hydraulic oil-out device comprises a valve body, a sealing head, a sleeve, an inner cylinder body, a hoop, a first oil-in and oil-out joint, a connecting cylinder, an outer cylinder body, an end cover, a core shaft, a lifting lug, a first cavity, a second cavity, a third cavity, a second oil-in and oil-out joint and a slurry discharge port; the side wall of the valve body is provided with a slurry outlet; one end of the valve body is fixedly connected with a main pipeline, the other end of the valve body is connected with an outer cylinder body through a hoop, the rear end of the outer cylinder body is connected with an end cover, the end cover is provided with a through hole, a second oil inlet and outlet connector is connected to the through hole of the end cover, and the inner cavity of the outer cylinder body in the through hole of the end cover is a third cavity; the first oil inlet and outlet joint is arranged on the outer cylinder body and is positioned at the position of the second cavity;

a sleeve and an inner cylinder body are arranged in the valve body; a sealing head is arranged in the sleeve, the rear end of the inner cylinder body is connected with a connecting cylinder, the inner end of the connecting cylinder is connected with an inner mandrel, and the connecting cylinder and the mandrel are both positioned in the inner cylinder body; an oil through hole is formed in the inner cylinder body, an oil inlet and an oil outlet at one end of the oil through hole are located at the position of the second cavity, and an oil inlet and an oil outlet at the other end of the oil through hole are located at the position of the first cavity; the first cavity is positioned in the cavity between the inner cylinder body and the mandrel; the sealing head slides in the valve body and the sleeve in a sealing way; the rear part of the inner cylinder body hermetically slides in the outer cylinder body, and the front end of the inner cylinder body is positioned in the valve body; the mandrel slides in the inner cylinder body in a sealing way, and the front end of the mandrel pushes the sealing head to slide in a sealing way.

The control method adopting the pressure relief device comprises the following steps:

the opening or closing of the slurry discharge valve is realized by controlling two oil inlet and outlet ports of the first oil inlet and outlet joint and the second oil inlet and outlet joint, the remote and on-site pipeline pressure monitoring is realized by the pressure sensor, and the remote and on-site dual operation of the slurry discharge valve improves the safety of a filling pipeline system;

the valve body is connected with the main pipeline, and the sealing head and the outer cylinder body are sealed by a U-shaped sealing ring, so that the sealing property of the whole pipeline is ensured; when the stop valve in front of the main pipeline is in a stop state or the pressure of the main pipeline is overlarge, the sealing head is pushed to the rear, the slurry discharging port is communicated with the main pipeline, and slurry in the main pipeline is discharged along the slurry discharging port of the bypass;

the core shaft and the sealing head are in threaded connection, the core shaft and the inner cylinder sleeve are sealed in a U-shaped and combined sealing mode, when oil enters the first oil inlet and outlet joint, hydraulic oil enters the first cavity, the core shaft is pushed to move and drive the sealing head to move simultaneously, the sealing head enters the sleeve, the sealing of the sealing head is protected by the sleeve, and then the sealing head moves along with the inner cylinder sleeve to open the grout outlet;

the connecting cylinder is in threaded connection with the inner cylinder sleeve, an oil inlet and an oil outlet are formed in the middle of the connecting cylinder, the first cavity is communicated with the second cavity, when the second oil inlet and outlet connector has oil, the inner cylinder sleeve is pushed to move integrally, hydraulic oil in the second cavity can push the mandrel to move after the inner cylinder sleeve is in place, and therefore the sealing head is pushed out of the sleeve to seal the valve body.

Has the advantages that due to the adoption of the proposal,

1. by adopting the device for monitoring the pressure of the paste filling pipeline and the pressure relief, the pressure of the filling pipeline can be monitored in real time, the pressure relief of the pipeline is realized under emergency, and the safety of a filling system is ensured.

2. By adopting the device for monitoring the pressure of the paste filling pipeline and relieving the pressure, the paste in the pipeline can be discharged when the machine is shut down due to reasons, so that the phenomenon that the stay time of the paste in the pipeline is too long to cause pipe blockage is avoided, and the economic loss is reduced.

3. Because the device for monitoring the pressure and the pressure relief of the paste filling pipeline is developed, the valve is arranged at the important node position of the long-distance slurry conveying pipeline, so that the pressure can be monitored at different positions in the pipeline, and the accident can be conveniently checked and maintained.

The pipeline safety and slurry discharge pipeline can be rapidly switched, and the pipeline is prevented from being damaged by overlarge pipeline pressure and from being solidified and blocked due to overlong slurry staying time in the pipeline, so that the safety of the whole filling system is ensured, and the aim of the invention is fulfilled.

The advantages are that: the invention has the advantages of compact structure, wear resistance, high pressure resistance, good sealing performance, convenient assembly, disassembly and maintenance, simple operation and labor saving. Not only can monitor anterior pipeline pressure, can also start pressure relief device and protect the pipeline, the device can use as the relief valve of lotion filling pipeline, for the effect of cream filling system's safety and stability have played the protection and driving navigation.

1. By adopting the device for monitoring the pressure of the paste filling pipeline and relieving the pressure, remote and on-site dual control can be realized, and on-site overhaul and remote control of a centralized control room are facilitated.

2. By adopting the device for monitoring the pressure of the paste filling pipeline and relieving the pressure, the leakage can not occur under the high-pressure working condition, the pressure of the pipeline can be mastered in real time, and the safety is greatly improved.

3. By adopting the device for monitoring the pressure of the paste filling pipeline and relieving the pressure, the structure is simple, the using amount of parts is less, the failure rate is greatly reduced, and the device is convenient to disassemble and maintain.

4. Adopt above-mentioned monitoring lotion filling line pressure and pressure relief device, compact structure also can use and easy to assemble in narrow and small space, and remote control can realize unmanned on duty.

Drawings

Fig. 1 is a schematic view of a pressure monitoring structure of the device for monitoring the pressure of the paste filling pipeline and relieving the pressure.

Fig. 2 is a schematic view of the device for monitoring the pressure of the paste filling pipeline and the pressure relief device when the device is completely closed.

Fig. 3 is a partially enlarged schematic view of the pressure monitor of fig. 1.

Fig. 4 is a schematic view of the sealing head entering the protective sleeve first when the pressure of the paste filling pipeline is monitored and the pressure relief device is opened according to the invention.

Fig. 5 is a schematic view of the device for monitoring the pressure of the paste filling pipeline and the pressure relief device when the device is completely opened.

In the figure, 1, a valve body; 2. a sealing head; 3. sleeving; 4. an inner cylinder body; 5. clamping a hoop; 6. a first oil inlet and outlet joint; 7. a connecting cylinder; 8. an outer cylinder body; 9. an end cap; 10. a mandrel; 11. a pressure monitor; 12. a piston; 13. a sleeve; 14. a plug; 15. a shock-proof pressure gauge; 16. a quick seal joint; 17. a tee joint; 18. a pressure sensor interface; 19. lifting lugs; 20. a first cavity; 21. a second cavity; 22. a third cavity; 23. a second oil inlet and outlet joint; 24. a pulp outlet; 25. a main pipeline.

Detailed Description

The invention comprises the following steps: a pressure relief device and a control method using the same.

The pressure relief device comprises: a slurry discharge valve and pressure monitor 11; the slurry discharge valve and the pressure monitor 11 are both mounted on the main conduit 25.

The pressure monitor 11 comprises: the device comprises a piston 12, a sleeve 13, a plug 14, a shock-proof pressure gauge 15, a quick sealing joint 16, a tee 17 and a pressure sensor interface 18; one end of the sleeve 13 is fixedly connected to the main pipeline 25, and the other end is connected with a plug 14; the sleeve 13 is provided with a piston 12, and the side walls of the piston 12 and the plug 14 are provided with seals which are positioned between the contact surfaces of the piston and the sleeve 13; the plug 14 is provided with a port of a quick sealing joint 16, the quick sealing joint 16 is connected between the plug 14 and a tee joint 17, one port of the other two ports of the tee joint 17 is connected with a shock-proof pressure gauge 15, the other port of the tee joint is a pressure sensor port 18, and the pressure sensor port 18 is connected with a pressure sensor.

The slurry discharge valve comprises: the hydraulic oil-discharging valve comprises a valve body 1, a sealing head 2, a sleeve 3, an inner cylinder body 4, a hoop 5, a first oil-discharging connector 6, a connecting cylinder 7, an outer cylinder body 8, an end cover 9, a core shaft 10, a lifting lug 19, a first cavity 20, a second cavity 21, a third cavity 22, a second oil-discharging connector 23 and a slurry discharging port 24;

a slurry outlet 24 is arranged on the side wall of the valve body 1; one end of the valve body 1 is fixedly connected with a main pipeline 25, the other end of the valve body 1 is connected with an outer cylinder body 8 through a hoop 5, the rear end of the outer cylinder body 8 is connected with an end cover 9, the end cover 9 is provided with a through hole, a second oil inlet and outlet connector 23 is connected with the through hole of the end cover 9, and a third cavity 22 is arranged in the inner cavity of the outer cylinder body 8 in the through hole of the end cover 9; the outer cylinder body 8 is provided with a first oil inlet and outlet joint 6, and the first oil inlet and outlet joint 6 is positioned at the position of the second cavity 21;

a sleeve 3 and an inner cylinder body 4 are arranged in the valve body 1; a sealing head 2 is arranged in the sleeve 3, the rear end of the inner cylinder body 4 is connected with a connecting cylinder 7, the inner end of the connecting cylinder 7 is connected with an inner mandrel 10, and the connecting cylinder 7 and the mandrel 10 are both positioned in the inner cylinder body 4; an oil through hole is formed in the inner cylinder body 4, an oil inlet and an oil outlet at one end of the oil through hole are positioned in the second cavity 21, and an oil inlet and an oil outlet at the other end of the oil through hole are positioned in the first cavity 20; the first cavity 20 is located between the inner cylinder 4 and the mandrel 10; the sealing head 2 slides in the valve body 1 and the sleeve 3 in a sealing way; the rear part of the inner cylinder body 4 slides in the outer cylinder body 8 in a sealing way, and the front end is positioned in the valve body 1; the mandrel 10 slides in the inner cylinder body 4 in a sealing way, and the front end of the mandrel 10 pushes the sealing head 2 to slide in a sealing way.

The control method adopting the pressure relief device comprises the following steps:

the opening or closing of the slurry discharge valve is realized by controlling the two oil inlet and outlet ports of the first oil inlet and outlet joint 6 and the second oil inlet and outlet joint 23, the remote and on-site pipeline pressure monitoring is realized by the pressure sensor, and the remote and on-site dual operation of the slurry discharge valve improves the safety of a filling pipeline system;

the valve body 1 is connected with the main pipeline 25, and is sealed with the sealing head 2 in the direction of the outer cylinder body 8 by adopting a U-shaped sealing ring, so that the sealing property of the whole pipeline is ensured; when the stop valve in front of the main pipeline 25 is in a stop state or the pressure of the main pipeline 25 is too high, the sealing head 2 is pushed to the rear, the slurry discharging port 24 is communicated with the main pipeline 25, and slurry in the main pipeline 25 is discharged along the slurry discharging port 24 of the bypass;

the core shaft 10 is connected with the sealing head 2 by threads, the core shaft 10 and the inner cylinder sleeve 4 are sealed in a U-shaped and combined sealing mode, when oil enters the first oil inlet and outlet connector 6, hydraulic oil enters the first cavity 20, the core shaft 10 is pushed to move and drives the sealing head 2 to move simultaneously, the sealing head 2 enters the sleeve 3, the sealing of the sealing head 2 is protected by the sleeve 3, and then the sealing head moves along with the inner cylinder sleeve 4 to open the slurry outlet 24;

the connecting cylinder 7 is in threaded connection with the inner cylinder sleeve 4, an oil inlet and outlet is formed in the middle of the connecting cylinder, so that the first cavity 20 is communicated with the second cavity 21, when oil enters the second oil inlet and outlet connector 23, the inner cylinder sleeve 4 is pushed to move integrally, and after the inner cylinder sleeve 4 is in place, hydraulic oil in the second cavity 21 can push the mandrel 10 to move, so that the sealing head 2 is pushed out of the sleeve 3, and the valve body 1 is sealed.

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings used in the description of the present invention or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

Embodiments of the present invention will be further described with reference to the drawings.