Grouting pressure monitoring device

Abstract

The utility model belongs to the field of monitoring devices, and particularly relates to a grouting pressure monitoring device which comprises a mortar injector. The middle part of the mortar injector is symmetrically communicated with grouting pipes; the top of the cement injector is communicated with a four-way pipeline; the middle part of the grouting pipe is communicated with a three-way pipeline; a check valve is mounted in the middle of the grouting pipe; the check valve is positioned between the three-way pipeline and the ash injector; a pressure release valve is mounted at the end part of the grouting pipe; the cement injector is positioned between the check valve and the pressure release valve; a third ball valve is installed at the end, close to the grouting pipe, of the three-way pipeline. A fourth ball valve and a first pressure gauge are respectively mounted at the end part of the three-way pipeline; the interiors of the three-way pipeline and the four-way pipeline can be dredged by opening and closing the first ball valve, the third ball valve and the check valve, the convenience of dredging and cleaning the first pressure gauge and the second pressure gauge by the device is improved, and the service life of the first pressure gauge and the second pressure gauge is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of monitoring devices, in particular to a grouting pressure monitoring device. Background Art

[0002] Coal mining operations mainly include underground mining and surface processing. Underground mining is to extract coal from underground through tunneling and coal mining, while surface processing is to crush, screen, wash and process the extracted coal to improve the quality and utilization rate of coal.

[0003] Grouting is a crucial process in coal mining operations. Whether it is underground grouting or ground grouting, the grouting pressure needs to be precisely controlled to ensure construction safety and maintain efficient work progress. For this reason, installing a pressure gauge to monitor the grouting pressure in real time has become a standard practice in the industry.

[0004] Existing pressure gauges need to be in direct contact with cement slurry to obtain accurate pressure data when working. It is found during use and observation that cement slurry tends to solidify after entering the channel of the pressure gauge, which makes it difficult for the pressure gauge to continue to work normally and shortens the service life of the pressure gauge.

[0005] Therefore, a grouting pressure monitoring device is proposed to solve the above problems. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the utility model to solve the technical problem is as follows: the grouting pressure monitoring device described in the utility model comprises a grouting device; the middle part of the grouting device is symmetrically connected with a grouting pipe; the top of the grouting device is connected with a four-way pipeline; the middle part of the grouting pipe is connected with a three-way pipeline; a stop valve is installed in the middle part of the grouting pipe; the stop valve is located between the three-way pipeline and the grouting device; a pressure relief valve is installed at the end of the grouting pipe; the grouting device is located between the stop valve and the pressure relief valve; the three-way pipeline is close to the grouting device. A third ball valve is installed at the end of the slurry pipe; a fourth ball valve and a first pressure gauge are respectively installed at the ends of the three-way pipeline; a first ball valve is installed at the end of the four-way pipeline close to the ash injector; a pressure sensor, a second pressure gauge and a second ball valve are respectively installed at the ends of the four-way pipeline; the inside of the three-way pipeline and the four-way pipeline can be unblocked by switching the first ball valve, the third ball valve and the check valve, thereby improving the convenience of the device for unblocking and cleaning the first pressure gauge and the second pressure gauge, and extending the service life of the first pressure gauge and the second pressure gauge.

[0008] Preferably, the inner walls of the three-way pipeline and the four-way pipeline are fixedly connected with oil bags; the middle parts of the first ball valve and the third ball valve are symmetrically fixedly connected with springs; the ends of the springs are fixedly connected with connecting plates; the ends of the connecting plates are fixedly connected with a plurality of elastic rods; rotating the first ball valve or the third ball valve can cause the elastic rods to pierce the oil bags under the elastic force of the springs, so that the butter inside the oil bags will flow into the three-way pipeline or the four-way pipeline and lubricate it, thereby reducing blockages in the three-way pipeline and the four-way pipeline.

[0009] Preferably, a plurality of blades are fixedly connected to the middle of the elastic rod; the ends of the blades are sharp; when the elastic rod approaches the oil bag, the elastic rod moves with the blades, and because the surfaces of the blades are sharp, the blades can cut the surface of the oil bag more easily, thereby speeding up the outflow of butter in the oil bag and lubricating the inside of the three-way pipe or the four-way pipe more quickly.

[0010] Preferably, a plurality of first magnets are fixedly connected to the end of the elastic rod; a second magnet is fixedly connected to the middle of the oil sac; the first magnet and the second magnet are arranged correspondingly; the elastic rod will continue to move along the oil sac and cut the oil sac under the magnetic force of the first magnet and the second magnet, thereby increasing the contact area between the elastic rod and the oil sac and further accelerating the speed at which the butter in the oil sac flows out.

[0011] Preferably, an elastic cloth is fixedly connected to the middle part of the connecting plate; the elastic cloth and the third ball valve are both fixedly connected; the elastic cloth makes the connecting plate and the first ball valve or the third ball valve fit more closely, reducing the friction between the elastic cloth and the three-way pipeline or the four-way pipeline when the first ball valve and the third ball valve rotate.

[0012] Preferably, a water inlet pipe is provided through the middle of the grouting pipe; a water outlet pipe is provided through the middle of the grouting pipe; a heating pipe is connected between the water inlet pipe and the water outlet pipe; the heating pipe is located inside the grouting pipe; the heating pipe is a spiral structure; the clean water inside the heating pipe will heat the cement slurry, thereby improving the fluidity of the cement slurry and reducing the agglomeration of the cement slurry when it flows.

[0013] Preferably, thermal insulation cotton is fixedly connected to the middle part of the grouting pipe; the thermal insulation cotton is located at the bottom of the three-way pipe; when the outside temperature is low, the thermal insulation cotton will reduce the heat conduction between the grouting pipe and the outside world, reduce the heat loss of cement slurry in the grouting pipe, and ensure that the cement slurry is at a suitable working temperature.

[0014] The utility model is beneficial in that:

[0015] 1. The grouting pressure monitoring device described in the utility model can clear the inside of the three-way pipeline and the four-way pipeline by switching the first ball valve, the third ball valve, and the stop valve, thereby improving the convenience of the device for clearing and cleaning the first pressure gauge and the second pressure gauge, and extending the service life of the first pressure gauge and the second pressure gauge.

[0016] 2. In the grouting pressure monitoring device described in the utility model, rotating the first ball valve or the third ball valve can cause the elastic rod to puncture the oil bag under the elastic force of the spring, so that the butter inside the oil bag will flow into the three-way pipeline or the four-way pipeline and lubricate it, reducing the blockage of the three-way pipeline and the four-way pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the main body of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the grouting pipe in the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the heating tube in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the second magnet in the utility model;

[0022] Figure 5 It is a structural schematic diagram of the connecting plate in the utility model.

[0023] In the figure: 1. ash injector; 11. first ball valve; 12. second ball valve; 13. third ball valve; 14. fourth ball valve; 15. first pressure gauge; 16. pressure sensor; 17. second pressure gauge; 18. stop valve; 19. pressure relief valve; 110. grouting pipe; 111. three-way pipeline; 112. four-way pipeline; 2. oil bag; 22. spring; 23. connecting plate; 24. elastic rod; 3. blade; 4. first magnet; 42. second magnet; 5. elastic cloth; 6. heating pipe; 62. water inlet pipe; 63. water outlet pipe; 7. thermal insulation cotton. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Specific examples are given below.

[0026] See also Figures 1 to 5As shown, a grouting pressure monitoring device described in an embodiment of the utility model comprises a grouting device 1; a grouting pipe 110 is symmetrically connected to the middle of the grouting device 1; a four-way pipeline 112 is connected to the top of the grouting device 1; a three-way pipeline 111 is connected to the middle of the grouting pipe 110; a stop valve 18 is installed in the middle of the grouting pipe 110; the stop valve 18 is located between the three-way pipeline 111 and the grouting device 1; a pressure relief valve 19 is installed at the end of the grouting pipe 110; the grouting device 1 is located between the stop valve 18 and the pressure relief valve 19; a third ball valve 13 is installed at the end of the three-way pipeline 111 close to the grouting pipe 110; a fourth ball valve 14 and a first pressure gauge 15 are respectively installed at the ends of the three-way pipeline 111; the four-way A first ball valve 11 is installed at the end of the pipeline 112 close to the ash injector 1; a pressure sensor 16, a second pressure gauge 17 and a second ball valve 12 are installed at the ends of the four-way pipeline 112 respectively; during normal operation, the second ball valve 12, the fourth ball valve 14 and the pressure relief valve 19 are in a closed state, while the remaining valves are in an open state. After the cement slurry is injected into the grouting pipe 110, the cement slurry will flow into the three-way pipeline 111 and the four-way pipeline 112 and flow out of the ash injector 1 into the hole. When the pressure sensor 16 and the second pressure gauge 17 are working, they will monitor and record the pressure at the output port of the ash injector 1, and the pressure sensor 16 will transmit the read pressure data to the monitoring server. When the first pressure gauge 15 is working, it will monitor the pressure in the middle of the grouting pipe 110. When there is a large reading error between the first pressure gauge 15 and the second pressure gauge 17, that is, the difference exceeds 1MPa, at this time, the first pressure gauge 15 or the second pressure gauge 17 has been blocked, and the staff can stop grouting and inject about 5 to 10m³ of clean water into the hole, then close the stop valve 18 and open the second ball valve 12. At this time, the clean water in the hole will flow through the first ball valve 11, the four-way pipeline 112, and the second ball valve 12 under the action of the formation pressure and spray out. During the process, the clean water will clean the pressure sensor 16 and the second pressure gauge 17. After cleaning for a period of time, close the first ball valve 11. When the pressure reading at the second pressure gauge 17 is 0, it means that the cement blocking the second pressure gauge 17 has been cleared. Then the fourth ball valve 14 can be opened and the pressure sensor 16 and the second pressure gauge 17 can be cleaned. Clean water is slowly pressed into the grouting pipe 110, and the clean water will flow through the third ball valve 13, the three-way pipeline 111, the fourth ball valve 14 and flow out from the fourth ball valve 14. During the process, the clean water will clean the first pressure gauge 15. After cleaning for a period of time, the third ball valve 13 is closed. When the pressure reading of the first pressure gauge 15 is 0, it means that the cement blocking the first pressure gauge 15 has been cleared. After the processing is completed, the valve can be restored to a normal working state and the grouting work can be continued; by switching the first ball valve 11, the third ball valve 13, and the stop valve 18, the inside of the three-way pipeline 111 and the four-way pipeline 112 can be unblocked, thereby improving the convenience of the device for unblocking and cleaning the first pressure gauge 15 and the second pressure gauge 17, and extending the service life of the first pressure gauge 15 and the second pressure gauge 17.

[0027] See also Figures 2 to 5 As shown, the inner walls of the three-way pipeline 111 and the four-way pipeline 112 are fixedly connected with oil bags 2; the middle parts of the first ball valve 11 and the third ball valve 13 are symmetrically fixedly connected with springs 22; the ends of the springs 22 are fixedly connected with connecting plates 23; the ends of the connecting plates 23 are fixedly connected with a plurality of elastic rods 24; butter is injected into the oil bag 2, when the first ball valve 11 and the third ball valve 13 are in the open state, the elastic rod 24 and the three-way pipeline 111 or the four-way pipeline 112 are in the contact state and bend under the action of pressure, the elastic rod 24 transmits the pressure to the connecting plate 23 and the spring 22 so that the spring 22 is also in the compressed state, when the first pressure gauge 15 or the second pressure gauge 17 is cleaned with clean water, the third ball valve 13 or the first ball valve 11 can be rotated, and when the first ball valve 11 and the third ball valve 13 are rotated, the spring 22 will be driven to move together, and when the first ball valve 11 or the third ball valve 13 is in the closed state, the elastic rod 24 will move with the three When the through pipeline 111 or the four-way pipeline 112 is detached, the spring 22 will lose the pressure applied by the three-way pipeline 111 or the four-way pipeline 112 and recover under the action of elastic force. The connecting plate 23 and the elastic rod 24 will move together with the spring 22 and approach the oil bag 2. The elastic rod 24 will recover after losing the pressure of the three-way pipeline 111 or the four-way pipeline 112. Then the elastic rod 24 will contact the oil bag 2 and apply pressure to the surface of the oil bag 2. The oil bag 2 will rupture under the pressure of the elastic rod 24, so that the butter inside will flow out and lubricate the inside of the four-way pipeline 112 or the three-way pipeline 111; rotating the first ball valve 11 or the third ball valve 13 can make the elastic rod 24 pierce the oil bag 2 under the elastic force of the spring 22, so that the butter inside the oil bag 2 will flow to the inside of the three-way pipeline 111 or the four-way pipeline 112 and lubricate it, reducing the blockage of the three-way pipeline 111 and the four-way pipeline 112.

[0028] See also Figure 5 As shown, a plurality of blades 3 are fixedly connected to the middle of the elastic rod 24; the ends of the blades 3 are sharp; when the elastic rod 24 approaches the oil bag 2, the elastic rod 24 will move with the blades 3, because the surfaces of the blades 3 are sharp, so that the blades 3 can cut the surface of the oil bag 2 more easily, speeding up the outflow of butter in the oil bag 2, so that it can lubricate the inside of the three-way pipeline 111 or the four-way pipeline 112 faster.

[0029] See also Figure 4 and Figure 5As shown, a plurality of first magnets 4 are fixedly connected to the end of the elastic rod 24; a second magnet 42 is fixedly connected to the middle of the oil bag 2; the first magnet 4 and the second magnet 42 are correspondingly arranged; when the elastic rod 24 moves toward the oil bag 2, it will move with the first magnet 4, and the distance between the first magnet 4 and the second magnet 42 will change when the first magnet 4 moves. When the first magnet 4 and the second magnet 42 are close to each other, they will be subject to the suction force exerted by the second magnet 42, and then the elastic rod 24 will continue to move along the oil bag 2 and cut the oil bag 2 under the magnetic force of the first magnet 4 and the second magnet 42, thereby increasing the contact area between the elastic rod 24 and the oil bag 2 and further accelerating the speed at which the butter in the oil bag 2 flows out.

[0030] See also Figure 5 As shown, an elastic cloth 5 is fixedly connected to the middle of the connecting plate 23; the elastic cloth 5 and the third ball valve 13 are both fixedly connected; when the spring 22 is reset, the connecting plate 23 will move with the elastic cloth 5 and cause the elastic cloth 5 to deform. After the blockage is cleared, the first ball valve 11 and the third ball valve 13 need to be rotated. At this time, the first ball valve 11 and the third ball valve 13 will move with the connecting plate 23 and the elastic cloth 5. The elastic cloth 5 will make the connecting plate 23 and the first ball valve 11 or the third ball valve 13 fit more closely, thereby reducing the friction between the elastic cloth 5 and the three-way pipeline 111 or the four-way pipeline 112 when the first ball valve 11 and the third ball valve 13 rotate.

[0031] See also Figure 2 and Figure 3 As shown, a water inlet pipe 62 is provided through the middle of the grouting pipe 110; a water outlet pipe 63 is provided through the middle of the grouting pipe 110; a heating pipe 6 is connected between the water inlet pipe 62 and the water outlet pipe 63; the heating pipe 6 is located inside the grouting pipe 110; the heating pipe 6 is a spiral structure; during the grouting work, when the outside temperature is low, the staff can inject heated clean water into the water inlet pipe 62 so that the clean water will enter the inside of the heating pipe 6, and the clean water will heat the cement slurry, improve the fluidity of the cement slurry, and reduce the agglomeration of the cement slurry when it flows.

[0032] See also Figure 2 and Figure 3 As shown, the middle part of the grouting pipe 110 is fixedly connected with thermal insulation cotton 7; the thermal insulation cotton 7 is located at the bottom of the three-way pipe 111; when the outside temperature is low, the thermal insulation cotton 7 will reduce the heat conduction between the grouting pipe 110 and the outside, reduce the heat loss of the cement slurry in the grouting pipe 110, and ensure that the cement slurry is at a suitable working temperature.

[0033] Working principle: During normal operation, the second ball valve 12, the fourth ball valve 14, and the pressure relief valve 19 are in the closed state, while the other valves are in the open state. After the cement slurry is injected into the grouting pipe 110, the cement slurry will flow into the three-way pipe 111 and the four-way pipe 112, and flow out from the ash injector 1 to the hole. The pressure sensor 16 and the second pressure gauge 17 will monitor and record the pressure at the output port of the ash injector 1 when working, and the pressure sensor 16 will transmit the read pressure data to the monitoring server. The first pressure gauge 15 will monitor the pressure in the middle of the grouting pipe 110 when working. When there is a large reading error between the first pressure gauge 15 and the second pressure gauge 17, that is, the difference exceeds 1MPa, at this time, the first pressure gauge 15 or the second pressure gauge 17 If the hole is clogged, the staff can stop grouting and pressurize about 5 to 10 m³ of clean water into the hole, then close the stop valve 18 and open the second ball valve 12. At this time, the clean water in the hole will flow through the first ball valve 11, the four-way pipeline 112, and the second ball valve 12 under the action of the formation pressure and spray out. During the process, the clean water will clean the pressure sensor 16 and the second pressure gauge 17. After cleaning for a period of time, close the first ball valve 11. When the pressure reading at the second pressure gauge 17 is 0, it means that the cement blocked at the second pressure gauge 17 has been cleared. Then open the fourth ball valve 14 and slowly press clean water into the grouting pipe 110. The clean water will flow through the third ball valve 13, the three-way pipeline 111, and the fourth ball valve 14 and flow out from the fourth ball valve 14. The clean water will clean the first pressure gauge 15, and the third ball valve 13 will be closed after cleaning for a period of time. When the pressure reading of the first pressure gauge 15 is 0, it means that the cement blocking the first pressure gauge 15 has been cleared. After the treatment is completed, the valve can be restored to a normal working state and the grouting work can be continued; when the first ball valve 11 and the third ball valve 13 are in an open state, the elastic rod 24 and the three-way pipeline 111 or the four-way pipeline 112 are in a contact state and bend under the action of pressure. The elastic rod 24 transmits the pressure to the connecting plate 23 and the spring 22 so that the spring 22 is also in a compressed state. When the clean water has cleaned the first pressure gauge 15 or the second pressure gauge 17, the third ball valve 13 or the first ball valve 11 can be rotated, and the first ball valve 11 and the third ball valve 13 When rotating, the spring 22 will be driven to move together. When the first ball valve 11 or the third ball valve 13 is in a closed state, the elastic rod 24 will be separated from the three-way pipeline 111 or the four-way pipeline 112. At this time, the spring 22 will lose the pressure applied by the three-way pipeline 111 or the four-way pipeline 112 and recover under the action of elastic force. The connecting plate 23 and the elastic rod 24 will move together with the spring 22 and approach the oil bag 2. After the elastic rod 24 loses the pressure of the three-way pipeline 111 or the four-way pipeline 112, it will recover. Then the elastic rod 24 will contact the oil bag 2 and apply pressure to the surface of the oil bag 2. The oil bag 2 will rupture under the pressure of the elastic rod 24, so that the butter inside will flow out and lubricate the inside of the four-way pipeline 112 or the three-way pipeline 111.When the elastic rod 24 approaches the oil bag 2, the elastic rod 24 will move with the blade 3, because the surface of the blade 3 is sharp, so that the blade 3 can cut the surface of the oil bag 2 more easily; when the elastic rod 24 moves toward the oil bag 2, it will move with the first magnet 4, and the distance between the first magnet 4 and the second magnet 42 will change when the first magnet 4 moves. When the first magnet 4 and the second magnet 42 approach each other, they will be affected by the suction force exerted by the second magnet 42. Then, the elastic rod 24 will continue to move along the oil bag 2 and cut the oil bag 2 under the magnetic force of the first magnet 4 and the second magnet 42, thereby increasing the contact area between the elastic rod 24 and the oil bag 2; when the spring 22 is reset, the connecting plate 23 will move with the elastic The elastic cloth 5 moves together and deforms the elastic cloth 5. After the blockage is cleared, the first ball valve 11 and the third ball valve 13 need to be rotated. At this time, the first ball valve 11 and the third ball valve 13 will move together with the connecting plate 23 and the elastic cloth 5. The elastic cloth 5 will make the connecting plate 23 and the first ball valve 11 or the third ball valve 13 fit more tightly; during the grouting work, when the outside temperature is low, the staff can inject heated clean water into the water inlet pipe 62 so that the clean water will enter the inside of the heating pipe 6. The clean water will heat the cement slurry and improve the fluidity of the cement slurry; when the outside temperature is low, the thermal insulation cotton 7 will reduce the heat conduction between the grouting pipe 110 and the outside world, and reduce the heat loss of the cement slurry in the grouting pipe 110. ;

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A grouting pressure monitoring device, comprising a grouting device (1), characterized in that: The middle of the ash injector (1) is symmetrically connected to a grouting pipe (110); the top of the ash injector (1) is connected to a four-way pipeline (112); the middle of the grouting pipe (110) is connected to a three-way pipeline (111); a stop valve (18) is installed in the middle of the grouting pipe (110); the stop valve (18) is located between the three-way pipeline (111) and the ash injector (1); a pressure relief valve (19) is installed at the end of the grouting pipe (110); the ash injector (1) is located at the stop valve (111); 8) and the pressure relief valve (19); a third ball valve (13) is installed at the end of the three-way pipeline (111) close to the grouting pipe (110); a fourth ball valve (14) and a first pressure gauge (15) are installed at the ends of the three-way pipeline (111); a first ball valve (11) is installed at the end of the four-way pipeline (112) close to the ash injector (1); a pressure sensor (16), a second pressure gauge (17) and a second ball valve (12) are installed at the ends of the four-way pipeline (112).

2. A grouting pressure monitoring device according to claim 1, characterized in that: The inner side walls of the three-way pipeline (111) and the four-way pipeline (112) are both fixedly connected to oil bags (2); the middle parts of the first ball valve (11) and the third ball valve (13) are both symmetrically fixedly connected to springs (22); the ends of the springs (22) are fixedly connected to connecting plates (23); and the ends of the connecting plates (23) are fixedly connected to a plurality of elastic rods (24).

3. A grouting pressure monitoring device according to claim 2, characterized in that: A plurality of blades (3) are fixedly connected to the middle of the elastic rod (24); the ends of the blades (3) are sharp.

4. A grouting pressure monitoring device according to claim 3, characterized in that: A plurality of first magnets (4) are fixedly connected to the end of the elastic rod (24); a second magnet (42) is fixedly connected to the middle of the oil bag (2); and the first magnets (4) and the second magnets (42) are arranged correspondingly.

5. A grouting pressure monitoring device according to claim 4, characterized in that: An elastic cloth (5) is fixedly connected to the middle of the connecting plate (23); the elastic cloth (5) and the third ball valve (13) are both in a fixed connection relationship.

6. A grouting pressure monitoring device according to claim 5, characterized in that: A water inlet pipe (62) is provided through the middle of the grouting pipe (110); a water outlet pipe (63) is provided through the middle of the grouting pipe (110); a heating pipe (6) is connected between the water inlet pipe (62) and the water outlet pipe (63); the heating pipe (6) is located inside the grouting pipe (110); and the heating pipe (6) is a spiral structure.

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