CN111054709A - Piston type pipe cleaner - Google Patents
Piston type pipe cleaner Download PDFInfo
- Publication number
- CN111054709A CN111054709A CN201811210464.XA CN201811210464A CN111054709A CN 111054709 A CN111054709 A CN 111054709A CN 201811210464 A CN201811210464 A CN 201811210464A CN 111054709 A CN111054709 A CN 111054709A
- Authority
- CN
- China
- Prior art keywords
- pig
- pressure
- main body
- piston
- diameter conduit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 239000012530 fluid Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 description 12
- 241000282887 Suidae Species 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
- B08B9/053—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction
- B08B9/055—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved along the pipes by a fluid, e.g. by fluid pressure or by suction the cleaning devices conforming to, or being conformable to, substantially the same cross-section of the pipes, e.g. pigs or moles
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a piston type pipe cleaner for pushing the piston type pipe cleaner into a guide pipe with a smaller diameter from a guide pipe with a larger diameter, comprising: a first sealing disk is coupled to the body and is capable of sealing against a larger diameter conduit to maintain a pressure differential, wherein the pressure on the second end of the body is sufficiently higher than the pressure-induced pressure differential on the first end of the body. The piston pig moving in the direction of the first end of the valve body when the piston pig is in the larger diameter pipe, and a second sealing disc connected to the main body and capable of sealing against the small diameter pipe so as to maintain a pressure differential, wherein the pressure on the second end of the main body is substantially higher than the pressure on the first end of the main body. When the piston pig is located in the smaller diameter pipe, the piston pig is moved in the direction of the first end of the valve body.
Description
Technical Field
The invention relates to the technical field of pipelines, in particular to a piston type pipe cleaner.
Background
The background description provided herein is for the purpose of generally presenting the context of the disclosure. Work of the presently named inventors, to the extent it is described in this background section, as well as aspects of the description that may not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly admitted as prior art.
Pig systems for the delivery of liquid or pasty substances are common in the art, in particular in coating technology, where they are mainly used in the supply units of the application devices. There, they are used in particular for transporting paint between the painting loop of a spray booth and the application device.
The pigs are subject to natural wear and, therefore, after a certain operating time, they become tight and leaks occur along them. They must then be replaced. This should be done in as short a time as possible and, if desired, also automatically, in order to avoid as much as possible expensive down time of the plant. In a pig system of the type described in the introduction, a pig station is provided which is arranged outside the pig station and contains a plurality of locations in which pigs, new or defective, can be stored. The external pigging station is connected to the pigging station by means of a pipe or hose. Typically, the pig channel in this pig station is closed by a plug against which a single-head pig moving in the actual pig system abuts. To replace this pig, the plug is removed by suitable means and a hose leading to the pig changing station is connected to the pig channel so that the now defective pig is removed and can be transported to a location. And a pig changing station. A new functional pig is then introduced in the pig channel of the pig station in the reverse direction and the pig channel is closed again by means of the plug. In this way, a large number of pigs can be introduced into the pig system, which ensures a very long service life. However, this mechanism is very complicated and the time required for pig replacement is not entirely insignificant.
The foregoing discussion of the background art is intended only to facilitate an understanding of the present invention. The discussion is not an acknowledgement or admission that any of the material referred to was or was part of the common general knowledge as at the priority date of the application.
Disclosure of Invention
The invention provides a piston pig for pushing the piston pig from a larger diameter conduit into a smaller diameter conduit, comprising: a first sealing disk is coupled to the body and is capable of sealing against a larger diameter conduit to maintain a pressure differential, wherein the pressure on the second end of the body is sufficiently higher than the pressure-induced pressure differential on the first end of the body. The piston pig moving in the direction of the first end of the valve body when the piston pig is in the larger diameter pipe, and a second sealing disc connected to the main body and capable of sealing against the small diameter pipe so as to maintain a pressure differential, wherein the pressure on the second end of the main body is substantially higher than the pressure on the first end of the main body. When the piston pig is located in the smaller diameter pipe, the piston pig is moved in the direction of the first end of the valve body.
Wherein further comprising pressure control means in the first sealing disk that allows fluid to flow through the first sealing disk when the pressure at the first end of the body exceeds the pressure at the second end of the body. Through a predetermined amount of back pressure.
Wherein the pressure control means is in the form of a resilient flap.
Wherein the first sealing disk is capable of passing through the smaller diameter conduit.
Wherein the end cap is connected to the body and is slidable relative to the body between a closed position in which fluid cannot bypass the end cap and an open position in which fluid can bypass the end cap.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to embodiments thereof; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Other systems, methods, and/or features of the present embodiments will become apparent to those skilled in the art upon review of the following detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the accompanying claims. Additional features of the disclosed embodiments are described in, and will be apparent from, the detailed description that follows.
The first embodiment is as follows:
the present embodiment explains that a piston pig for pushing the piston pig from a larger diameter conduit into a smaller diameter conduit is proposed, comprising: a first sealing disk is coupled to the body and is capable of sealing against a larger diameter conduit to maintain a pressure differential, wherein the pressure on the second end of the body is sufficiently higher than the pressure-induced pressure differential on the first end of the body. The piston pig moving in the direction of the first end of the valve body when the piston pig is in the larger diameter pipe, and a second sealing disc connected to the main body and capable of sealing against the small diameter pipe so as to maintain a pressure differential, wherein the pressure on the second end of the main body is substantially higher than the pressure on the first end of the main body. When the piston pig is located in the smaller diameter pipe, the piston pig is moved in the direction of the first end of the valve body.
Wherein further comprising pressure control means in the first sealing disk that allows fluid to flow through the first sealing disk when the pressure at the first end of the body exceeds the pressure at the second end of the body. Through a predetermined amount of back pressure.
Wherein the pressure control means is in the form of a resilient flap.
Wherein the first sealing disk is capable of passing through the smaller diameter conduit.
Wherein the end cap is connected to the body and is slidable relative to the body between a closed position in which fluid cannot bypass the end cap and an open position in which fluid can bypass the end cap.
Example two:
this embodiment is configured to provide a method of allowing bi-directional fluid flow through a pig, comprising the steps of: fluid flow is used in a first direction to open the first check valve and close the second check valve to allow fluid flow in the first direction, and fluid flow is used in a second direction to open the second check valve and close the first check valve to allow fluid flow in the second direction. The first check valve is a flapper disc that closes a perforation through the sealing disc.
The second check valve is a buffer cap on one end of the pig that closes off the fluid path through the pig body.
Example three:
this embodiment continues with a piston pig comprising a body having a fluid passage, a first sealing disc of a first diameter, a first valve allowing fluid to flow through the first sealing disc in only a first direction, a second sealing disc of a second diameter, and a second valve allowing fluid to flow through the body in only a second direction, wherein the second sealing disc has a diameter less than the diameter of the first sealing disc. The first sealing disk has a plurality of penetrations and the first valve includes means for opening and closing the penetrations in response to fluid pressure. The second valve includes a closure member attached to the body and slidable relative to the body between a closed position and an open position in which fluid can bypass the closure member.
Although the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications may be made without departing from the scope of the invention. That is, the methods, systems or devices discussed above are examples. Various configurations may omit, substitute, or add various procedures or components as appropriate. For example, in alternative configurations, the methods may be performed in an order different than that described, and/or various stages may be added, omitted, and/or combined. Also, features described with respect to certain configurations may be combined in various other configurations. Different aspects and elements of the configuration may be combined in a similar manner. Furthermore, many of the elements that follow as technology develops are merely examples and do not limit the scope of the disclosure or claims.
Specific details are given in the description to provide a thorough understanding of the exemplary configurations including implementations. However, configurations may be practiced without these specific details, for example, well-known circuits, processes, algorithms, structures, and techniques have been shown without unnecessary detail in order to avoid obscuring the configurations. This description provides example configurations only, and does not limit the scope, applicability, or configuration of the claims. Rather, the foregoing description of the configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes may be made in the function and arrangement of elements without departing from the spirit or scope of the disclosure.
Further, although each operation may describe the operation as a sequential process, many of the operations can be performed in parallel or concurrently. In addition, the order of the operations may be rearranged. There may be other steps in a process. Furthermore, examples of the methods may be implemented by hardware, software, firmware, middleware, code, hardware description languages, or any combination thereof. When implemented in software, firmware, middleware or code, the program code or code segments to perform the necessary tasks may be stored in a non-transitory computer-readable medium such as a storage medium and the described tasks are performed by a processor.
It is intended that the foregoing detailed description be regarded as illustrative rather than limiting, and that it be understood that it is the following claims, including all equivalents, that are intended to define the spirit and scope of this invention. The above examples are to be construed as merely illustrative and not limitative of the remainder of the disclosure. After reading the description of the invention, the skilled person can make various changes or modifications to the invention, and these equivalent changes and modifications also fall into the scope of the invention defined by the claims.
Claims (5)
1. A piston pig for pushing the piston pig from a larger diameter conduit into a smaller diameter conduit, comprising: the valve comprises a cylindrical main body having a first end and a second end, a first sealing disc connected to the main body and capable of sealing against a larger diameter conduit so as to maintain a pressure differential, wherein the pressure on the second end of the main body is sufficiently higher than the pressure differential caused by the pressure on the first end of the main body that a piston pig moves towards the first end of the valve body when the piston pig is located in a larger diameter conduit, and a second sealing disc connected to the main body and capable of sealing against a smaller diameter conduit so as to maintain a pressure differential, wherein the pressure on the second end of the main body is sufficiently higher than the pressure on the first end of the main body that the piston pig moves towards the first end of the valve body when the piston pig is located in a smaller diameter conduit.
2. The piston type pipe pig of claim 1, further comprising a pressure control device in the first sealing disc that allows fluid to flow through the first sealing disc through a predetermined amount of backpressure when the pressure at the first end of the main body exceeds the pressure at the second end of the main body.
3. The piston-type pipe pig of claim 2, characterized in that the pressure control means is in the form of an elastic baffle.
4. The piston type pipe pig of claim 1 wherein said first sealing disc is capable of passing through said smaller diameter conduit.
5. The piston type pig according to claim 4, further comprising an end cap connected to the main body and slidable relative to the main body between a closed position in which fluid cannot bypass the end cap and an open position in which fluid can bypass the end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811210464.XA CN111054709A (en) | 2018-10-17 | 2018-10-17 | Piston type pipe cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811210464.XA CN111054709A (en) | 2018-10-17 | 2018-10-17 | Piston type pipe cleaner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111054709A true CN111054709A (en) | 2020-04-24 |
Family
ID=70297138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811210464.XA Pending CN111054709A (en) | 2018-10-17 | 2018-10-17 | Piston type pipe cleaner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111054709A (en) |
-
2018
- 2018-10-17 CN CN201811210464.XA patent/CN111054709A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200424 |
|
| WD01 | Invention patent application deemed withdrawn after publication |