CN220059872U - Plunger packing leak hunting structure and reciprocating type plunger pump system - Google Patents

Abstract

The plunger packing leakage detection structure comprises a plunger unit and a flushing unit, wherein the plunger unit comprises a plunger cavity, a plunger and a packing box, and sealing packing is arranged in the packing box; the flushing unit is used for providing a cleaning medium for flushing the stuffing box and comprises a cleaning medium conveying pipe and a cleaning medium output pipe; the leakage detection structure comprises a multi-way valve, wherein the multi-way valve is arranged on a cleaning medium output pipe and comprises at least one overhauling outlet capable of being opened and closed, and the overhauling outlet is used for outputting cleaning medium in the cleaning medium output pipe so as to perform leakage detection of sealing filler. A reciprocating plunger pump system is also provided. The plunger packing leakage detection structure and the reciprocating plunger pump system can timely and conveniently detect packing leakage conditions.

Description

Plunger packing leak hunting structure and reciprocating type plunger pump system

Technical Field

The utility model relates to the field of reciprocating pumps, in particular to the field of filler leakage detection.

Background

The high-temperature high-pressure solid-containing feeding pump belongs to a reciprocating plunger pump, and the plunger seal of the stuffing box of the hydraulic end generally adopts a stuffing seal mode. During use, relative movement between the plunger and the packing seal can create friction, wear of the packing can occur over time, leading to seal failure, the packing can also form debris from the packing, and further damage the plunger.

In view of this, there is a need to provide a leak detection structure for plunger packing, and to know the leakage condition of the packing in time.

Disclosure of Invention

The utility model aims to provide a plunger packing leakage detection structure which can timely and conveniently detect packing leakage.

The plunger packing leakage detection structure is used for a reciprocating plunger pump system, and the reciprocating plunger pump system comprises a plunger unit and a flushing unit, wherein the plunger unit comprises a plunger cavity, a plunger and a packing box, and sealing packing is arranged in the packing box; the flushing unit is used for providing a cleaning medium for flushing the stuffing box and comprises a cleaning medium conveying pipe and a cleaning medium output pipe; the leakage detection structure comprises a multi-way valve arranged on the cleaning medium output pipe, wherein the multi-way valve comprises at least one overhaul outlet, and the overhaul outlet is used for outputting cleaning medium in the cleaning medium output pipe so as to perform leakage detection of sealing filler.

In one or more embodiments, at least two of the multi-way valves are disposed at different locations on the same cleaning medium delivery line.

In one or more embodiments, the multi-way valve is a three-way valve.

In one or more embodiments, the stuffing box includes a cleaning medium input port and a cleaning medium output port, the cleaning medium delivery pipe communicates with the cleaning medium input port, and the cleaning medium output pipe communicates with the cleaning medium output port.

In one or more embodiments, the plunger packing leak detection structure further includes a thermometer disposed on a side of the cleaning medium output pipe adjacent to the plunger unit for detecting a medium temperature in the cleaning medium output pipe.

In one or more embodiments, the reciprocating plunger pump system includes a plurality of plunger units and a flushing unit, each of the cleaning medium output pipes including the multi-way valve.

In one or more embodiments, the plunger packing leak detection structure further includes a packing leak detection apparatus in communication with the service outlet for receiving media flowing from the service outlet and performing a seal packing test.

In one or more embodiments, the plunger packing leak detection structure further includes a console for controlling the opening and closing of the service outlet.

In one or more embodiments, the leak detection structure further includes a multi-way valve disposed on the cleaning medium delivery pipe.

Another object of the present utility model is to provide a reciprocating plunger pump system comprising a plunger unit, a pump body unit and a flushing unit on which the plunger packing leak detection structure as claimed in any one of claims is provided.

According to the plunger packing leakage detection structure, the multi-way valve is arranged on the output pipeline of the cleaning medium, the medium flowing out from the self-sealing box is obtained by opening the overhauling outlet, whether the packing contains components or not is checked, whether the packing leaks or not is checked, judgment is timely made, operation is convenient, and leakage detection operation can be performed without stopping the whole equipment.

Drawings

The above and other features, properties and advantages of the present utility model will become more apparent from the following description in conjunction with the accompanying drawings and embodiments, in which:

FIG. 1 is a schematic structural view of a plunger unit;

fig. 2 is an electrical circuit diagram of the flush unit.

Description of the reference numerals

10. Plunger unit

11. Plunger chamber

12. Plunger piston

13. Stuffing box

14. Sealing filler

15. Cleaning medium inlet

16. Cleaning medium outlet

20. Flushing unit

21. Cleaning medium conveying pipe

22. Cleaning medium output pipe

23. Multi-way valve

24. An outlet

25. Flushing inlet

26. Flushing liquid drain

230. Maintenance outlet

Detailed Description

The present utility model will be further described with reference to specific embodiments and drawings, in which more details are set forth in the following description in order to provide a thorough understanding of the present utility model, but it will be apparent that the present utility model can be embodied in many other forms than described herein, and that those skilled in the art may make similar generalizations and deductions depending on the actual application without departing from the spirit of the present utility model, and therefore should not be construed to limit the scope of the present utility model in terms of the content of this specific embodiment.

It is noted that these and other figures are merely examples, which are not drawn to scale and should not be construed as limiting the scope of the utility model as it is actually claimed.

Reciprocating plunger pump systems are used to deliver media with high solids characteristics. By the reciprocating motion of the plunger, the medium with high solid content is sucked and sent out. Referring to fig. 1, the reciprocating plunger pump system includes a plunger unit 10, the plunger unit 10 including a plunger chamber 11, a plunger 12, and a packing box 13, and a sealing packing 14 is included in the packing box 13.

When a medium with high solids content is in the pump body, the solids in the medium can contact the plunger 12 and the sealing packing 14, adversely affecting the plunger 12. One solution is therefore to provide a flushing unit 20 for conveying the cleaning medium, the flushing unit 20 being used for providing the cleaning medium for flushing the stuffing box 13, comprising a cleaning medium conveying pipe 21 and a cleaning medium outlet pipe 22, the cleaning medium preferably being an oil medium.

As will be appreciated in connection with fig. 1 and 2, the flushing unit 20 includes a flushing inlet 25, a flushing drain 26, a cleaning medium delivery pipe 21, a cleaning medium delivery pipe 22, and an outlet 24, which are sequentially arranged, and the stuffing box 13 includes a cleaning medium input port 15 and a cleaning medium output port 16. The cleaning medium delivery pipe 21 communicates with the cleaning medium input port 15, the cleaning medium output pipe 22 communicates with the cleaning medium output port 16, and the oil cleaning medium is fed into the plunger unit 10 and flows out through the cleaning medium output pipe 22.

By delivering the cleaning medium to the stuffing box 13, the cleaning medium can enter the plunger chamber 11, and the time of the cleaning medium entering and exiting the stuffing box 13 is set to be matched with the reciprocating time of the plunger, so that the contact between the high-solid-content medium delivered by the pump body and the sealing stuffing 14 can be effectively blocked.

However, during long-term use of the plunger pump, debris from the seal packing 14 is still generated between the plunger 12 and the seal packing 14 due to long-term relative movement, and the seal packing 14 wears out and enters the cleaning medium of the packing box 13.

To detect whether a packing has leakage, the plunger packing leakage detection structure of the present disclosure includes a multi-way valve 23 disposed on the cleaning medium output pipe 22, where the multi-way valve 23 includes at least one openable and closable service outlet 230, and the service outlet 230 is used for outputting the cleaning medium in the cleaning medium output pipe 22 to perform leakage detection of the sealing packing 14.

For example, the multi-way valve 23 is a three-way valve, and the service outlet 230 is normally closed, so that the normal flow of the flushing cleaning medium is achieved. In the maintenance state, the maintenance outlet 230 of the three-way valve is opened to allow the cleaning medium for flushing to flow out through the maintenance outlet, and whether the components contained in the filler exist or not is checked to check whether the filler leaks or not. The method is convenient to operate, and can be operated without stopping the whole equipment.

In some embodiments, to avoid misjudgment, at least two multi-way valves 23 are provided at different positions of the same cleaning medium outlet pipe 22 to detect whether or not the filler is present at different points. In other embodiments, the leak detection structure further includes a multi-way valve provided on the cleaning medium delivery pipe 21 to determine whether the cleaning medium itself is pure.

In order to determine whether there is a packing leakage problem based on the above embodiment, the plunger packing leakage detecting structure may further include a thermometer (not shown) provided on a side of the cleaning medium output pipe 22 near the plunger unit 10 for detecting a medium temperature in the cleaning medium output pipe. If the temperature rises sharply, exceeding the normal operating temperature range or temperature rise rate, a severe friction between the plunger and the packing is indicated, and thus the temperature rise of the oil is detected by the thermometer, the operator can open the service outlet 230 for leak detection confirmation operation.

The plunger packing leak detection structure further comprises packing leak detection equipment which is communicated with the overhaul outlet and is used for receiving the medium flowing out from the overhaul outlet 230 and carrying out medium detection. The inspection mode can be judged by manually identifying the filler in the medium or other physical and chemical methods.

The opening of service outlet 230 may be manually operated by a worker or may be automatically operated by a control system. In some embodiments, the plunger packing leak detection structure further includes a console for controlling the opening and closing of the service outlet 230. For example, the console is also in signal communication with a thermometer, and when the entered temperature value or temperature increase rate exceeds a reasonable interval for normal operation, the console controls the opening of the service outlet 230 of the multiport valve to confirm whether or not a leak of filler has occurred.

The large reciprocating plunger pump generally comprises a plurality of plunger units and flushing units which are parallel, and each cleaning medium output pipe comprises a multi-way valve which is independently arranged so as to realize independent leakage detection operation on sealing packing of each plunger unit.

The structure solves the problem of detecting the leakage of the filling material of the plunger pump, and detects the abrasion condition of the filling material by opening at least one overhaul outlet on the multi-way valve and switching the flow direction of the valve, so that the operation is simple and the detection result is accurate.

By combining the introduction of the plunger packing leakage detection structure, the reciprocating plunger pump system can be further understood, and comprises a plunger unit, a pump body unit and a flushing unit, wherein the plunger packing leakage detection structure is arranged on the flushing unit for detecting the leakage condition of packing, and a leakage detection pipe orifice is added on an outlet pipeline of the flushing system.

The present utility model uses specific words to describe embodiments of the utility model, such as "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic is associated with at least one embodiment of the utility model. Thus, it should be emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various positions in this specification are not necessarily referring to the same embodiment. Furthermore, certain features, structures, or characteristics of one or more embodiments of the utility model may be combined as suitable.

While the utility model has been described in terms of preferred embodiments, it is not intended to be limiting, but rather to the utility model, as will occur to those skilled in the art, without departing from the spirit and scope of the utility model. Therefore, any modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model fall within the protection scope defined by the claims of the present utility model.

Claims (10)

1. The plunger packing leakage detection structure is used for a reciprocating plunger pump system, the reciprocating plunger pump system comprises a plunger unit (10) and a flushing unit (20), the plunger unit (10) comprises a plunger cavity (11), a plunger (12) and a packing box (13), and sealing packing (14) is arranged in the packing box (13);

the flushing unit (20) is used for providing a cleaning medium for flushing the stuffing box (13) and comprises a cleaning medium conveying pipe (21) and a cleaning medium output pipe (22);

the leakage detection structure is characterized by comprising a multi-way valve (23) which is arranged on the cleaning medium output pipe (22), wherein the multi-way valve (23) comprises at least one openable and closable overhaul outlet (230), and the overhaul outlet (230) is used for outputting cleaning medium in the cleaning medium output pipe (22) so as to detect leakage of the sealing filler (14).

2. A plunger packing leak detection arrangement as defined in claim 1, wherein at least two of said multi-way valves (23) are disposed at different locations on the same said cleaning medium outlet pipe (22).

3. The plunger packing leak detection structure as set forth in claim 1, wherein the multi-way valve (23) is a three-way valve.

4. The plunger packing leak detection structure according to claim 1, wherein the packing box includes a cleaning medium input port (15) and a cleaning medium output port (16), the cleaning medium delivery pipe (21) communicates with the cleaning medium input port (15), and the cleaning medium output pipe (22) communicates with the cleaning medium output port (16).

5. The plunger packing leak detection structure as set forth in claim 1, further comprising a thermometer provided on a side of the cleaning medium output pipe (22) close to the plunger unit (10) for detecting a medium temperature in the cleaning medium output pipe (22).

6. The plunger packing leak detection structure as set forth in claim 1, wherein said reciprocating plunger pump system includes a plurality of plunger units and a flushing unit, each of said cleaning medium output pipes (22) including said multi-way valve.

7. The plunger packing leak detection structure as defined in claim 1, further comprising a packing leak detection apparatus in communication with the service outlet (230) for receiving media flowing from the service outlet (230) and performing a seal packing test.

8. The plunger packing leak detection structure as defined in claim 1, further comprising a console for controlling the opening and closing of the service outlet (230).

9. The plunger packing leak detection structure as defined in claim 1, further comprising a multi-way valve disposed on the cleaning medium delivery tube (21).

10. A reciprocating plunger pump system comprising a plunger unit, a pump body unit and a flushing unit, wherein the flushing unit is provided with a plunger packing leak detection structure according to any one of claims 1 to 9.