CN220346739U - Piston for double-connection explosion pulse ash removing device - Google Patents
Piston for double-connection explosion pulse ash removing device Download PDFInfo
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- CN220346739U CN220346739U CN202321861404.0U CN202321861404U CN220346739U CN 220346739 U CN220346739 U CN 220346739U CN 202321861404 U CN202321861404 U CN 202321861404U CN 220346739 U CN220346739 U CN 220346739U
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- piston
- explosion
- explosion chamber
- chamber
- removal device
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- 238000004880 explosion Methods 0.000 title claims abstract description 207
- 238000013022 venting Methods 0.000 claims abstract description 40
- 238000007789 sealing Methods 0.000 claims description 22
- 230000009977 dual effect Effects 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000003068 static effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 9
- 239000002737 fuel gas Substances 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 238000005474 detonation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035485 pulse pressure Effects 0.000 description 1
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The embodiment of the utility model discloses a piston for a double-connection explosion pulse ash removal device, which comprises a piston skirt and a piston top, wherein the piston skirt is formed with a through explosion venting opening in a surrounding mode, the piston top is arranged in the piston skirt, and the explosion venting opening is separated by the piston top into a front explosion chamber and a rear explosion chamber which are positioned at two ends of the explosion venting opening; the piston top is eccentrically arranged in the explosion venting opening, so that the volumes of the front explosion chamber and the rear explosion chamber are different. The piston top is eccentrically arranged, so that the front explosion chamber and the rear explosion chamber at two sides of the piston top keep different volumes, and the problem that the piston is kept static and does not move due to uniform stress at two sides of the piston top when two sides of the piston top are exploded simultaneously is avoided, so that the explosion accident occurs.
Description
Technical Field
The embodiment of the utility model relates to the technical field of explosion ash removal, in particular to a piston for a double-connection explosion pulse ash removal device.
Background
In the explosion pulse ash removing device, a piston is often used for sealing a valve seat, driving force is derived from air pressure or hydraulic pressure, and the piston is driven to open by means of shock waves generated by igniting premixed fuel gas in a closed space to explode.
The double-connection explosion pulse ash removing device sequentially explodes at two sides of the piston top is based on a mode that the piston top divides the piston into a front explosion chamber and a rear explosion chamber, and in general, the pre-mixed gas pressure in the front explosion chamber and the rear explosion chamber is consistent, and the center line of the explosion venting hole is arranged at the side face of the center of the piston. Therefore, if the space of the front explosion chamber is as large as that of the rear explosion chamber, the ignition electrode ignites and explodes, the same large impact force is generated on the two sides of the piston top, and the piston does not move, so that a 'explosion' accident occurs.
Disclosure of Invention
Therefore, the embodiment of the utility model provides a piston for a double-explosion pulse ash removal device, and the piston top is eccentrically arranged, so that the front explosion chamber and the rear explosion chamber at two sides of the piston top keep different volumes, and the problem that when two sides of the piston top are exploded simultaneously, the piston is kept stationary and does not move due to uniform stress at the two sides of the piston top, so that a 'explosion accident' occurs is avoided.
In order to achieve the above object, the embodiments of the present utility model provide the following technical solutions:
in one aspect of the embodiment of the utility model, a piston for a dual-explosion pulse ash removal device is provided, comprising a piston skirt and a piston top, wherein the piston skirt is formed with a through explosion venting port in a surrounding manner, the piston top is arranged in the piston skirt, and the explosion venting port is divided into a front explosion chamber and a rear explosion chamber which are positioned at two ends of the explosion venting port by the piston top; wherein,
the piston top is eccentrically arranged in the explosion venting port, so that the volumes of the front explosion chamber and the rear explosion chamber are different.
As a preferable mode of the utility model, sealing groove groups are respectively arranged on the outer peripheral surfaces of the piston skirt, which are close to the two ends, and sealing rings for sealing the contact surfaces of the outer peripheral surfaces of the piston skirt and the outer parts of the piston skirt are detachably arranged on the sealing groove groups.
As a preferable mode of the present utility model, the seal ring group includes a wear-resistant ring groove and a seal ring groove provided in order from an end to a center in an axial direction of the piston skirt.
As a preferable mode of the utility model, a central ring groove is also arranged on the outer peripheral surface of the piston skirt, and the central ring groove is positioned between the sealing groove groups at the two ends;
and a secondary sealing ring is detachably arranged in the central ring groove.
As a preferable mode of the present utility model, the plurality of center ring grooves are formed, and the plurality of center ring grooves are arranged at intervals along the axial direction of the piston skirt.
As a preferable scheme of the utility model, the number of the central ring grooves is two, and the shortest distance between the two central ring grooves is larger than the diameter of the explosion venting opening of the double-connection explosion pulse ash cleaning device.
As a preferable mode of the present utility model, a through hole for communicating the pre-explosion chamber and the post-explosion chamber is formed in the piston crown.
As a preferred embodiment of the present utility model, the through hole is provided with a check valve.
As a preferred embodiment of the present utility model, the volume of the pre-explosion chamber is smaller than the volume of the post-explosion chamber.
Embodiments of the present utility model have the following advantages:
in the embodiment of the utility model, after the front explosion chamber explodes, the piston moves towards the rear explosion chamber and passes through the explosion venting port to open the first wave pulse explosion ash removal. The ignition electrode ignites the post-explosion chamber, the piston moves towards the direction of the forward explosion chamber, and the second wave pulse ash cleaning work is continuously started beyond the explosion venting port. Because the volumes of the back explosion chamber and the front explosion chamber are different, the resistance of the piston top is extremely reduced after the first wave explosion venting, and the opening speed of the second wave piston can be further improved. Further, based on the quick-opening piston, the effect of the explosion pulse ash removal device can be better improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the utility model, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present utility model, should fall within the ambit of the technical disclosure.
Fig. 1 is a schematic structural diagram of a piston for a dual explosion pulse ash removal device according to embodiment 1 of the present utility model;
fig. 2 is a schematic structural diagram of a piston for a dual explosion pulse ash removal device according to embodiment 2 of the present utility model;
fig. 3 is a schematic structural diagram of a piston for a dual explosion pulse ash removal device according to embodiment 3 of the present utility model;
fig. 4 is a schematic structural diagram of a piston for a dual explosion pulse ash removal device according to embodiment 4 of the present utility model.
In the figure:
1-a piston skirt; 2-piston crown; 3-a wear-resistant ring groove; 4-through holes; 5-a front explosion chamber; 6-a post-explosion chamber; 7-a central ring groove; 8-check valve; 9-the center line of the explosion venting port; 10-diameter of explosion venting port; 11-center ring groove spacing; 12-sealing ring groove.
Detailed Description
Other advantages and advantages of the present utility model will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the utility model, a piston for a dual-explosion pulse ash removal device is provided, wherein a piston top 2 deflects a piston skirt 1 to form a small pre-explosion chamber 5 and a post-explosion chamber 6. The pre-explosion chamber 5 ignites the explosion earlier than the post-explosion chamber 6. In order to prevent the combustible mixture in the front explosion chamber 5 and the rear explosion chamber 6 from leaking from the explosion venting holes, two ring grooves are formed at the front and rear ends of the piston skirt 1, respectively, and in order to improve the wear resistance of the entire piston when the piston reciprocates in the direction in which the front explosion chamber 5 and the rear explosion chamber 6 are arranged, it is necessary to provide the wear-resistant end ring grooves 3 outside the seal ring grooves 12 (it is to be noted that the outside here means the side closer to the end in the axial direction is the outside, and the side described below means that the both ends in the axial direction are regarded as the side without special description). Namely, the ring groove structure at each end respectively comprises a sealing ring groove 12 and a wear-resistant ring groove 3, and correspondingly, the sealing ring groove 2 and the wear-resistant ring groove 3 are respectively arranged in the peripheral direction of the front explosion chamber 5 and the rear explosion chamber 6, namely, before the ignition electrode ignites and detonates.
Further, in order to better seal the pre-explosion chamber 5 and the post-explosion chamber 6, a set (i.e., two) of center ring grooves 7 are provided on both sides of the center line 9 of the explosion venting hole (both sides refer to directions along both ends in the axial direction, i.e., positions shown in fig. 3 and 4), the length of the piston skirt 1 is longer than the inner diameter 10 (shown by numeral D in the drawings) of the explosion venting hole, and the length of the center ring groove space 11 (i.e., shortest distance between the two center ring grooves 7) formed between the two center ring grooves 7 is shown by numeral L in the drawings. Wherein L is greater than D.
Further, a through hole 4 is opened in the center of the piston crown 2. When the front explosion chamber 5 is ignited for explosion, the piston moves towards the rear explosion chamber 6, and meanwhile, high-pressure detonation fuel gas enters the rear explosion chamber 6 through the through hole 4 of the piston top 2, so that the initial pressure of the rear explosion chamber 6 before or during detonation is increased.
In the process of moving the piston from the front explosion chamber 5 to the rear explosion chamber 6, the side explosion venting port is passively opened, and the explosive gas passes through the instantaneously opened explosion venting port to discharge first-wave high-pressure shock wave to clean ash.
Further, after the check valve 8 is assembled in the central through hole 4 of the piston top 2 and the high-pressure gas of the front explosion chamber 5 enters the rear explosion chamber 6, the pressure is suddenly increased along with the ignition and detonation of the rear explosion chamber 6, the check valve 8 is automatically closed, the piston moves from the rear explosion chamber 6 to the front explosion chamber 5, and the explosion gas opens a second wave higher pressure shock wave ash removing through the explosion venting port.
Based on the above arrangement, the utility model has the following advantages:
1. the piston top 2 is offset, so that the front explosion chamber 5 and the rear explosion chamber 6 at two sides of the piston top 2 keep different volumes, and the situation that the two sides of the piston top 2 are uniformly stressed when the two sides are exploded simultaneously, and the piston is kept static and does not move, so that a 'explosion chamber' accident occurs is avoided.
2. When the front explosion chamber 5 explodes, high-pressure explosion gas can enter the rear explosion chamber 6, the pressure of the gas before the explosion of the rear explosion chamber 6 is increased, the check valve 8 is arranged in the center hole, the high-pressure gas or medium-pressure gas in the rear explosion chamber 6 can be prevented from flowing back to the front explosion chamber 5 after the ash is removed by the first wave explosion pulse, and the peak value of the second wave explosion pulse pressure is better improved.
Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
Example 1
The structure is shown in fig. 1, a piston skirt 1 is connected with a piston crown 2, the piston crown 2 is positioned in the piston skirt 1, and the piston crown 2 is asymmetrically arranged in the piston skirt 1 and is biased to the left side of the piston skirt 1. The piston top 2 divides the interior of the piston skirt 1 into two parts, the inner space of the left side of the piston top 2 is a front explosion chamber 5, and the inner space of the right side is a rear explosion chamber 6. It is apparent that the internal volume of the pre-explosion chamber 5 is smaller than the internal volume of the post-explosion chamber 6. The "front" in the pre-explosion chamber 5 and the "rear" in the post-explosion chamber 6 refer to the time-series of explosions. I.e. the pre-explosion chamber 5 explodes before the post-explosion chamber 6.
The two ends of the outer wall surface of the piston skirt 2 are provided with wear-resistant ring grooves 3 for mounting wear-resistant metal rings, such as copper rings. Inside the wear-resistant ring grooves 3 at both ends, there are provided seal ring grooves 12 for mounting seal rings, such as O-ring seals.
The explosion venting port on the outer side of the piston skirt 2 is positioned in the center of the piston skirt 2 (i.e. the piston skirt 2 is coaxial with the explosion venting port).
Example 2
The structure is shown in fig. 2, the piston skirt 1 is connected with the piston crown 2, the piston crown 2 is positioned in the piston skirt 1, and the piston crown 2 is asymmetrically arranged in the piston skirt 1 and is biased to the left side of the piston skirt 1. The piston top 2 divides the interior of the piston skirt 1 into two parts, the inner space of the left side of the piston top 2 is a front explosion chamber 5, and the inner space of the right side is a rear explosion chamber 6. It is apparent that the internal volume of the pre-explosion chamber 5 is smaller than the internal volume of the post-explosion chamber 6. The "front" in the pre-explosion chamber 5 and the "rear" in the post-explosion chamber 6 refer to the time-series of explosions. I.e. the pre-explosion chamber 5 explodes before the post-explosion chamber 6.
A through hole 4 is arranged at the center of the piston top 2, and the through hole 4 is communicated with a front explosion chamber 5 and a rear explosion chamber 6.
The two ends of the outer wall surface of the piston skirt 1 are provided with wear-resistant ring grooves 3 for mounting wear-resistant metal rings, such as copper rings. Inside the wear-resistant ring grooves 3 at both ends, there are provided seal ring grooves 12 for mounting seal rings, such as O-ring seals.
The explosion venting port on the outer side of the piston skirt 2 is positioned in the center of the piston skirt 2 (i.e. the piston skirt 2 is coaxial with the explosion venting port).
Example 3
The structure is shown in fig. 3, the piston skirt 1 is connected with the piston crown 2, the piston crown 2 is positioned in the piston skirt 1, and the piston crown 2 is asymmetrically arranged in the piston skirt 1 and is biased to the left side of the piston skirt 1. The piston top 2 divides the interior of the piston skirt 1 into two parts, the inner space of the left side of the piston top 2 is a front explosion chamber 5, and the inner space of the right side is a rear explosion chamber 6. It is apparent that the internal volume of the pre-explosion chamber 5 is smaller than the internal volume of the post-explosion chamber 6. The "front" in the pre-explosion chamber 5 and the "rear" in the post-explosion chamber 6 refer to the time-series of explosions. I.e. the pre-explosion chamber 5 explodes before the post-explosion chamber 6.
A through hole 4 is arranged at the center of the piston top 2, and the through hole 4 is communicated with a front explosion chamber 5 and a rear explosion chamber 6.
The two ends of the outer wall surface of the piston skirt 1 are provided with wear-resistant ring grooves 3 for mounting wear-resistant metal rings, such as copper rings. Inside the wear-resistant ring grooves 3 at both ends, there are provided seal ring grooves 12 at the ends for mounting seal rings, such as O-ring seals. The two sides of the center line 9 of the explosion venting hole are symmetrically provided with central ring grooves 7 for installing sealing rings, such as O-shaped rubber sealing rings. The distance 11 between the two central ring grooves is larger than the diameter 10 of the explosion venting hole. The sealing ring groove 12 forms a first seal of the mixed fuel gas in the front explosion chamber 5 and the rear explosion chamber 6, and the central ring groove 7 forms a second seal of the mixed fuel gas in the front explosion chamber 5 and the rear explosion chamber 6.
The explosion venting port on the outer side of the piston skirt 2 is positioned in the center of the piston skirt 2 (i.e. the piston skirt 2 is coaxial with the explosion venting port).
Example 4
The structure is shown in fig. 4, the piston skirt 1 is connected with the piston crown 2, the piston crown 2 is positioned in the piston skirt 1, and the piston crown 2 is asymmetrically arranged in the piston skirt 1 and is biased to the left side of the piston skirt 1. The piston top 2 divides the interior of the piston skirt 1 into two parts, the inner space of the left side of the piston top 2 is a front explosion chamber 5, and the inner space of the right side is a rear explosion chamber 6. It is apparent that the internal volume of the pre-explosion chamber 5 is smaller than the internal volume of the post-explosion chamber 6. The "front" in the pre-explosion chamber 5 and the "rear" in the post-explosion chamber 6 refer to the time-series of explosions. I.e. the pre-explosion chamber 5 explodes before the post-explosion chamber 6.
A through hole 4 is arranged at the center of the piston top 2, and the through hole 4 is communicated with a front explosion chamber 5 and a rear explosion chamber 6. A check valve 8 is provided in the through hole 4, and the installation requires that the check valve 8 flow in a direction from the pre-explosion chamber 5 to the post-explosion chamber 6. When the front explosion chamber 5 ignites the mixed fuel gas for detonation, the piston moves towards the rear explosion chamber 6, and high-pressure or medium-pressure explosion gas enters the rear explosion chamber 6. When the left end face of the piston skirt 1 passes over the explosion venting position, the first wave explosion pulse starts to be released, the pressure of the rear explosion chamber 6 is larger than that of the front explosion chamber 5, the piston skirt 1 starts to move towards the front explosion chamber 5, and when the right end face of the piston skirt 1 passes over the explosion venting position, the second wave explosion pulse starts to be released.
The two ends of the outer wall surface of the piston skirt 1 are provided with wear-resistant ring grooves 3 for mounting wear-resistant metal rings, such as copper rings. Inside the wear-resistant ring grooves 3 at both ends, there are provided seal ring grooves 12 for mounting seal rings, such as O-ring seals. The two sides of the center line 9 of the explosion venting hole are symmetrically provided with central ring grooves 7 for installing sealing rings, such as O-shaped rubber sealing rings. The central ring groove spacing 11 formed by the two central ring grooves 7 is larger than the diameter 10 of the explosion venting hole. The sealing ring groove 12 forms a first seal of the mixed fuel gas in the front explosion chamber 5 and the rear explosion chamber 6, and the central ring groove 7 forms a second seal of the mixed fuel gas in the front explosion chamber 5 and the rear explosion chamber 6.
The explosion venting port on the outer side of the piston skirt 2 is positioned in the center of the piston skirt 2 (i.e. the piston skirt 2 is coaxial with the explosion venting port).
While the utility model has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.
Claims (9)
1. The piston for the double-connection explosion pulse ash removal device is characterized by comprising a piston skirt (1) and a piston top (2), wherein the piston skirt (1) is surrounded and formed with a through explosion venting port, the piston top (2) is arranged in the piston skirt (1), and the explosion venting port is divided into a front explosion chamber (5) and a rear explosion chamber (6) which are positioned at two ends of the explosion venting port by the piston top (2); wherein,
the piston crown (2) is arranged eccentrically in the explosion venting opening, so that the volumes of the front explosion chamber (5) and the rear explosion chamber (6) are different.
2. The piston for the dual explosion pulse ash removal device according to claim 1 is characterized in that sealing groove groups are respectively arranged on the outer peripheral surfaces of the piston skirt (1) close to two ends, and sealing rings for sealing the contact surfaces of the outer peripheral surfaces of the piston skirt (1) and the outer parts of the piston skirt (1) are detachably arranged on the sealing groove groups.
3. A piston for a dual explosion pulse ash removal device according to claim 2, characterized in that the seal ring group comprises a wear-resistant ring groove (3) and a seal ring groove (12) which are arranged in sequence from end to center along the axial direction of the piston skirt (1).
4. A piston for a dual explosion pulse ash removal device according to claim 2 or 3, characterized in that a central ring groove (7) is further provided on the outer peripheral surface of the piston skirt (1), the central ring groove (7) being located between the sealing groove groups at both ends;
and a secondary sealing ring is detachably arranged in the central annular groove (7).
5. The piston for the dual explosion pulse ash removal device according to claim 4 is characterized in that a plurality of central ring grooves (7) are formed, and the plurality of central ring grooves (7) are arranged at intervals along the axial direction of the piston skirt (1).
6. The piston for the dual explosion pulse ash removal device according to claim 5 is characterized in that the number of the central ring grooves (7) is two, and the shortest distance between the two central ring grooves (7) is larger than the diameter (10) of the explosion venting opening of the dual explosion pulse ash removal device.
7. A piston for a dual explosion pulse ash removal device according to any of claims 1-3, characterized in that the piston crown (2) is formed with a through hole (4) through which the pre-explosion chamber (5) and the post-explosion chamber (6) communicate.
8. A piston for a dual explosion pulse ash removal device according to claim 7, characterised in that the through hole (4) is provided with a non-return valve (8).
9. A piston for a dual explosion pulse ash removal device according to any of the claims 1-3, characterized in that the volume of the pre-explosion chamber (5) is smaller than the volume of the post-explosion chamber (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321861404.0U CN220346739U (en) | 2023-07-14 | 2023-07-14 | Piston for double-connection explosion pulse ash removing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321861404.0U CN220346739U (en) | 2023-07-14 | 2023-07-14 | Piston for double-connection explosion pulse ash removing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220346739U true CN220346739U (en) | 2024-01-16 |
Family
ID=89477877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321861404.0U Active CN220346739U (en) | 2023-07-14 | 2023-07-14 | Piston for double-connection explosion pulse ash removing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220346739U (en) |
-
2023
- 2023-07-14 CN CN202321861404.0U patent/CN220346739U/en active Active
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