Pressure-adjustable water-saving slurry pump plunger sealing circulating system

Abstract

The invention discloses a pressure-adjustable water-saving slurry pump plunger sealing circulation system which comprises a plunger sleeve installed on a plunger, a stuffing box is installed in the plunger sleeve, an inlet and an outlet of the stuffing box are communicated with a pressure cleaning circulation pipeline, and a power pump and a water tank used for filtering are installed on the pressure cleaning circulation pipeline. The sealing circulating cleaning pipeline is arranged on the plunger device, so that the stuffing box can be lubricated and cooled according to cleaning requirements, impurity particles possibly carried on the surface of the stuffing box can be cleaned, the working environment of stuffing is improved, the service life of the stuffing is prolonged, the use environment of the sealing stuffing is guaranteed from the source, and the service life of the stuffing is prolonged. And a sealing monitoring circulating pipeline is additionally arranged, so that once the sealing filler is damaged, the damage can be known at the first time in advance, and corresponding measures are taken to ensure the safe operation of equipment.

Description

Technical Field

[0001] The invention relates to the technical field of mud pump plungers, and in particular to a pressure-adjustable cement slurry pump plunger sealing circulation system. Background Art

[0002] The plunger mud pump was created in the process of industrial demand and technological evolution. It is widely used in various fields of the national economy, especially in the mining and oil drilling process. Because the medium being transported contains a large amount of particles, traditional centrifugal pumps are prone to wear, blockage and inability to generate sufficient pressure when transporting high-concentration and highly abrasive mud media, so the plunger mud pump came into being. However, during the continuous and long-term operation of the plunger mud pump, the particulate matter attached to the plunger surface will enter the sealing packing with the reciprocating motion of the plunger, causing the packing to wear and leak. This requires us to enhance the service life of the sealing packing so that it can operate safely and reliably for a long time, and to be able to know and take corresponding measures in the first time when the packing is worn and leaked to ensure the normal and safe operation of the equipment. Summary of the invention

[0003] In view of the above defects or shortcomings, the object of the present invention is to provide a plunger seal circulation system of a cement slurry pump with adjustable pressure.

[0004] To achieve the above purpose, the technical solution of the present invention is:

[0005] A plunger seal circulation system of an adjustable pressure-section cement slurry pump comprises: a plunger sleeve installed on the plunger, a stuffing box installed in the plunger sleeve, an inlet and an outlet on the stuffing box connected to a pressure cleaning circulation pipeline, and a power pump and a water tank for filtering are installed on the pressure cleaning circulation pipeline.

[0006] The pressure cleaning pipeline includes a first pipeline connected to the outlet of the stuffing box, the first pipeline is connected to the inlet of the water tank, the outlet of the water tank is connected to a second pipeline, the second pipeline is connected to the inlet of the stuffing box to form a circulation loop; the power pump injects clean water into the stuffing box through the second pipeline, the plunger sleeve, and then circulates to the water tank through the first pipeline.

[0007] The stuffing box is equipped with a separation ring, a first O-ring, a support ring, a stuffing, a water ring, and a clamping ring from the inside to the outside.

[0008] A support ring is installed between the isolation ring and the filler, a cavity is formed between the isolation ring and the filler, the first pipeline is connected to the cavity, and a water flow ring is formed when cleaning is performed.

[0009] A filter is installed on the first pipeline.

[0010] The first pipeline is also installed with a pressure gauge and a first stop valve for adjusting the pressure of the cleaning water in the second pipeline.

[0011] A second sealing monitoring circulation pipeline is arranged on the second pipeline, a first sealing monitoring circulation pipeline is connected to the outlet of the stuffing box, and the first sealing monitoring circulation pipeline is connected to the inlet of the water tank; the second sealing monitoring circulation pipeline injects clean water into the water ring through the plunger sleeve and the stuffing box, and then circulates to the water tank through the first sealing monitoring circulation pipeline.

[0012] The second sealing monitoring circulation pipeline is provided with a second stop valve for controlling the water volume of the water ring.

[0013] A turbidity sensor and an alarm are installed on the first sealed monitoring circulation pipeline.

[0014] A three-stage filter screen is arranged in the water tank.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The present invention provides a plunger seal circulation system for an adjustable pressure-section cement slurry pump. By arranging a seal circulation cleaning pipeline on the plunger device, the stuffing box can be lubricated, cooled, and the impurity particles that may be carried on its surface can be cleaned according to the cleaning requirements, thereby improving the working environment of the stuffing, extending the service life of the stuffing, ensuring the use environment of the sealing stuffing from the source, extending the service life of the stuffing, and adding a seal monitoring circulation pipeline. Once the sealing stuffing is damaged, it can be known in advance at the first time, and corresponding measures can be taken to ensure the safe operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the plunger seal circulation system of the adjustable pressure-section cement slurry pump of the present invention.

[0018] In the figure, 1 is plunger; 2 is sealing ring; 3 is plunger sleeve; 4 is stuffing box; 5 isolating ring; 6 is first O-ring; 7 is support ring; 8 is stuffing; 9 is first pipeline; 10 is pressure gauge; 11 is first stop valve; 12 is turbidity sensor; 13 is filter; 14 is alarm; 15 is first seal monitoring circulation pipeline; 16 is water tank; 17 is power pump; 18 is second pipeline; 19 is Yx seal; 20 is clamping ring; 21 is water ring; 22 is second O-ring; 23 is second stop valve; 24 is second seal monitoring circulation pipeline. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the present invention.

[0020] like Figure 1 As shown, the present invention provides an adjustable pressure-section cement slurry pump plunger sealing circulation system, comprising: a plunger sleeve 3 installed on a plunger 1, a stuffing box 4 installed in the plunger sleeve 3, the inlet and outlet of the stuffing box 4 are connected to a pressure cleaning circulation pipeline, and a power pump 17 and a water tank 16 for filtering are installed on the pressure cleaning circulation pipeline. A sealing ring 2 is provided on the plunger sleeve 3 to seal the end of the plunger sleeve 3.

[0021] Specifically, the pressure cleaning pipeline includes a first pipeline 9 connected to the outlet of the stuffing box 4, the first pipeline 9 is connected to the inlet of the water tank 16, the outlet of the water tank 16 is connected to a second pipeline 18, the second pipeline 18 is connected to the inlet of the stuffing box 4, forming a circulation loop; the power pump 17 injects clean water into the stuffing box 4 through the second pipeline 18, the plunger sleeve 3, and then circulates to the water tank 16 through the first pipeline 9.

[0022] In the present invention, the stuffing box 4 is installed with an isolation ring 5, a first O-ring 6, a support ring 7, a stuffing 8, a water ring 21, a second O-ring 22, and a clamping ring 20 from the inside to the outside. The isolation ring 5 isolates the mud medium, the first O-ring 6 ensures that the high-pressure clean water does not communicate with the sealing monitoring pipeline, and the second O-ring 22 and the Yx seal 19 ensure that the sealing monitoring water does not flow out from the plunger 1.

[0023] It should be noted that a support ring 7 is installed between the isolation ring 5 and the packing 8, a cavity is formed between the isolation ring 5 and the packing 8, and the first pipeline 9 is connected to the cavity, and a water flow ring is formed when cleaning. A filter 13 is installed on the first pipeline 9; a pressure gauge 10 and a first stop valve 11 for adjusting the pressure of the cleaning water in the second pipeline 18 are also installed on the first pipeline 9. The water flow ring in the middle of the support ring 7 adjusts the pressure of the cleaning water in the second pipeline 18 through the first stop valve 11 in the first pipeline 9, so that it has an upward lifting force on the plunger 1, reducing the eccentric wear caused by its own weight, and at the same time lubricating and cooling it and cleaning the impurity particles that may be carried on its surface, improving the working environment of the packing 8 and extending the service life of the packing 8.

[0024] Preferably, the second pipeline 18 is provided with a second sealing monitoring circulation pipeline 24, the outlet of the stuffing box 4 is connected with the first sealing monitoring circulation pipeline 15, and the first sealing monitoring circulation pipeline 15 is connected with the inlet of the water tank 16; the second sealing monitoring circulation pipeline 24 injects clean water into the water ring 21 through the plunger sleeve 3 and the stuffing box 4, and then circulates to the water tank 16 through the first sealing monitoring circulation pipeline 15. The second sealing monitoring circulation pipeline 24 is provided with a second stop valve 23 for controlling the water volume of the water ring 21; the first sealing monitoring circulation pipeline 15 is installed with a turbidity sensor 12 and an alarm 14. If the packing 8 is not pressed tightly or is damaged and causes leakage, the turbidity sensor 12 in the first sealing monitoring circulation pipeline 15 will detect a signal to make the alarm 14 sound an alarm, reminding that the packing 8 has leakage and should be pressed accordingly or prepared for replacement.

[0025] Furthermore, a three-stage filter screen is arranged in the water tank 16. The three-stage filter screen is arranged in the water tank 16 to ensure the cleanliness of the water quality in the entire sealed circulation system.

[0026] The adjustable pressure-section cement slurry pump plunger seal circulation system of the present invention uses high-pressure circulating water in the pressure cleaning pipeline to clean the particulate matter attached to the plunger surface, and the cleaning water pressure can be adjusted according to needs, thereby ensuring the use environment of the sealing packing from the source, extending the service life of the packing, and adding a sealing monitoring circulation pipeline. Once the sealing packing is damaged, it can be known in advance and corresponding measures can be taken to ensure the safe operation of the equipment.

[0027] It is obvious to those skilled in the art that the above-mentioned specific examples are only preferred embodiments of the present invention. Therefore, the improvements and changes that may be made by those skilled in the art to certain parts of the present invention still embody the principles of the present invention and achieve the purpose of the present invention, and all belong to the scope of protection of the present invention.

Claims

1. An adjustable pressure-section cement slurry pump plunger seal circulation system, characterized in that: include: A plunger sleeve (3) is mounted on the plunger (1), a stuffing box (4) is mounted inside the plunger sleeve (3), an inlet and an outlet on the stuffing box (4) are connected to a pressure cleaning circulation pipeline, and a power pump (17) and a water tank (16) for filtering are mounted on the pressure cleaning circulation pipeline.

2. The adjustable pressure-section cement slurry pump plunger seal circulation system according to claim 1 is characterized in that: The pressure cleaning pipeline comprises a first pipeline (9) connected to the outlet of the stuffing box (4), the first pipeline (9) being connected to the inlet of the water tank (16), the outlet of the water tank (16) being connected to a second pipeline (18), the second pipeline (18) being connected to the inlet of the stuffing box (4), so as to form a circulation loop; the power pump (17) injects clean water into the stuffing box (4) through the second pipeline (18), the plunger sleeve (3), and then circulates to the water tank (16) through the first pipeline (9).

3. The adjustable pressure-section cement slurry pump plunger seal circulation system according to claim 2 is characterized in that: The stuffing box (4) is equipped with an isolation ring (5), a first O-ring (6), a support ring (7), a stuffing (8), a water ring (21), and a clamping ring (20) from the inside to the outside.

4. The adjustable pressure-section cement slurry pump plunger seal circulation system according to claim 3 is characterized in that: A support ring (7) is installed between the isolation ring (5) and the filler (8), a cavity is formed between the isolation ring (5) and the filler (8), and the first pipeline (9) is connected to the cavity, forming a water flow ring when cleaning is performed.

5. The adjustable pressure-section cement slurry pump plunger seal circulation system according to claim 2 is characterized in that: A filter (13) is installed on the first pipeline (9).

6. The adjustable pressure-section cement slurry pump plunger seal circulation system according to claim 2 or 5, characterized in that: The first pipeline (9) is also provided with a pressure gauge (10) and a first stop valve (11) for adjusting the pressure of the cleaning water in the second pipeline (18).

7. The adjustable pressure-section cement slurry pump plunger seal circulation system according to claim 3 or 6, characterized in that: The second pipeline (18) is provided with a second sealing monitoring circulation pipeline (24); the outlet of the stuffing box (4) is connected to the first sealing monitoring circulation pipeline (15); the first sealing monitoring circulation pipeline (15) is connected to the inlet of the water tank (16); the second sealing monitoring circulation pipeline (24) injects clean water into the water ring (21) through the plunger sleeve (3) and the stuffing box (4), and then circulates to the water tank (16) through the first sealing monitoring circulation pipeline (15).

8. The adjustable pressure-section cement slurry pump plunger seal circulation system according to claim 7, characterized in that: The second sealing monitoring circulation pipeline (24) is provided with a second stop valve (23) for controlling the water volume of the water ring (21).

9. The adjustable pressure-section cement slurry pump plunger seal circulation system according to claim 7, characterized in that: A turbidity sensor (12) and an alarm (14) are installed on the first sealed monitoring circulation pipeline (15).

10. The adjustable pressure-section cement slurry pump plunger seal circulation system according to claim 1, characterized in that: A three-stage filter screen is arranged in the water tank (16).

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