CN202372072U - Igniter for oil-gas well cable bridge plug setting tool - Google Patents
Igniter for oil-gas well cable bridge plug setting tool Download PDFInfo
- Publication number
- CN202372072U CN202372072U CN201120500642XU CN201120500642U CN202372072U CN 202372072 U CN202372072 U CN 202372072U CN 201120500642X U CN201120500642X U CN 201120500642XU CN 201120500642 U CN201120500642 U CN 201120500642U CN 202372072 U CN202372072 U CN 202372072U
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- resistor
- resistance
- igniter
- housing
- plug
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Abstract
The utility model relates to a resistive igniter for an oil-gas well cable bridge plug setting tool, which comprises a housing (3), igniting powder (5) and a resistor (4), wherein the housing (3) forms a closed inner cavity (8) through an insulating plug arranged at a first end of the housing (3) and a sealing seat arranged at a second end of the housing (3); the igniting powder (5) and the resistor (4) are arranged in the inner cavity (8); a first end of the resistor (4) passes through the insulating plug to extend out of the housing (3); a second end of the resistor (4) is connected with the housing (3); and the resistor (4) is formed by at least two resistances in a parallel mode. The resistor of the igniter provided by the utility model adopts the structural design that at least two resistances are connected in parallel, and thus, when one resistance is in bad contact due to collision or shaking and cannot ignite, other resistances can still normally work, and the reliability of the ignition is obviously improved.
Description
Technical field
The utility model relates to the mining operations packing device of oil gas well, relates in particular to the resistance-type igniter that a kind of oil gas well electric cable bridge plug setting tool is used.
Background technology
In the underground work of oil gas well, because of requirement of engineering, sometimes will be with a certain well section temporary transient or permanent closure get up, make the oil gas well punish into two independent parts from packing.Well section below the packing section no longer influences the operation of the above well section of packing section, and the above well section of packing section still can be carried out corresponding underground work, and the oil gas well is produced again.
Usually adopt the electric cable bridge plug setting tool to carry out the packing operation in the prior art, igniter is installed at this electric cable bridge plug setting tool.When setting operation, electric cable bridge plug and setting tool one remove the down-hole.After reaching the setting position, switch on to igniter by cable, make igniter blast and light the main primer in the setting tool, through the gunpowder explosion bridging plug is set.
At present, the igniter that generally adopts has two kinds, and a kind of is bridge silk igniter, and another kind is the resistance-type igniter.Because the resistance-type igniter is stronger and safe in utilization than the anti-stray current ability that adopts bridge silk igniter, therefore, it has become the application mainstream of igniter.Ignition element in the existing resistance-type igniter is to use resistor.Yet when going into the well, setting tool runs into collision or vibrations through regular meeting, and this collision or vibrations can cause the igniter loose contact, and making can not normal ignition after its energising and the misfire phenomenon occurs.This unavoidably can reduce the reliability that electric cable bridge plug sets success.
For this reason, the igniter that needs a kind of new electric cable bridge plug setting tool of exploitation to use at present, thus make this igniter can overcome the loose contact that vibrations cause to a certain extent, avoid occurring the misfire phenomenon, improve the success rate of igniting link.
The utility model content
Be to solve the problem that exists in the cable bridge obturating plug envelope work progress, the purpose of the utility model provides a kind of oil gas well electric cable bridge plug with igniting reliability of raising and sets and use the resistance-type igniter.
For this reason, the utility model provides a kind of resistance-type igniter that is used for oil gas well electric cable bridge plug setting tool, comprising: shell, and it forms the inner chamber of a sealing through insulating plug that is located at its first end place and the seal receptacle that is located at its second end place; And be arranged on ignition charge and the resistor in the inner chamber, and first end of this resistor passes insulating plug and stretches out said shell, and second end links to each other with shell.Wherein, resistor is made up of with parallel way at least two resistance.
In one embodiment, resistor is made up of with parallel way two identical resistance.
In one embodiment, first end of resistor is made up of spring.
In one embodiment, insulating plug has central shaft hole, and this central shaft hole comprises hole enlargement hole that is in the outer end and the undergauge hole that communicates with inner chamber, and the main body of spring is installed in the hole enlargement hole.
In one embodiment, seal receptacle is an ignition grain.
In one embodiment, insulating plug is the bakelite plug.
In one embodiment, insulating plug and seal receptacle fix on the shell through being adhesively fixed.
The utility model has following advantage with respect to prior art:
The resistor of igniter adopts the structural design of at least two resistance parallel connections, and therefore resistance produces loose contact can't light a fire the time because of collision or vibrations therein, and other resistance still can operate as normal, and this has obviously improved the reliability of igniting.
Description of drawings
Come at length to explain the structure and the operating procedure of the utility model based on accompanying drawing and through example below, wherein:
Fig. 1 is the cutaway view of an embodiment of the resistance-type igniter that sets usefulness of the oil gas well electric cable bridge plug according to the utility model.
The specific embodiment
As shown in Figure 1, the resistance-type igniter 10 of the utility model has a cylindrical outer casing 3.The insulating plug of this cylindrical outer casing 3 through being located at its front end place forms the inner chamber 8 of a sealing in the enclosure with being located at the seal receptacle at its tail end place, ignition charge 5 promptly is stored in this inner chamber 8.Insulating plug for example can be bakelite plug 2, and it all can for example be fixed on the shell 3 through gluing mode with seal receptacle together.Resistor 4 also is installed in inner chamber 8.
According to the illustrated embodiment of the utility model, this resistor 4 is made up of two parallel resistor.Like this, because each resistance all possesses independently ignition ability, therefore produce loose contact can't light a fire the time at a resistance because of collision or vibrations, another resistance still can play the function of igniting.Therefore, the reliability of igniting is significantly improved.
Be made up of two parallel resistor although only shown resistor 4 in the illustrated embodiment, yet understand easily, resistor 4 also can be made up of three or more a plurality of parallel resistor.In an advantageous embodiments, parallel resistor can have identical specifications and models.
In one embodiment, seal receptacle is an ignition grain 6.Increase progressively charging means through the design of ignition grain and optional sequence, can guarantee point gunpowder 5, ignition grain 6 reliability of igniting, igniting and the security of use, improved the ignition ability of igniter.
As shown in Figure 1, in the igniter 10 according to the utility model, bakelite plug 2 has a central shaft hole.This central shaft hole is formed with the undergauge hole 2-2 that communicates with inner chamber 8 that is positioned at the rear portion by being positioned at anterior hole enlargement hole 2-1.One end of said resistor 4 (i.e. two resistance parallel connected end) is formed by spring 1.The conveyor screw part of this spring 1 is contained among the 2-1 of hole enlargement hole at least in part.The front end of this spring is as the input of initial firing current, and 2-2 extends in the inner chamber 8 and its tail end is through the undergauge hole.The other end of resistor 4 (i.e. another parallel connected end of two resistance) is welded on the inwall of cylindrical outer casing 3.Therefore, cylindrical outer casing 3 is as another input of initial firing current, and it can adopt easy conductive, can bear the made of elevated pressures.
Utilization is installed in spring in the above-mentioned central shaft hole as the input of initial firing current, makes to slow down the impact of collision by the elasticity of spring 1, thereby avoids or reduce igniter 10 because of shaking suffered influence.Therefore the reliability of the igniter igniting further raising that has been improved.
Though the utility model is described, under the situation of the scope that does not break away from the utility model, can carries out various improvement and can replace parts wherein to it with equivalent with reference to preferred embodiment.The utility model is not limited to disclosed specific embodiment in the literary composition, but comprises all technical schemes in the scope that falls into claim.
Claims (7)
1. resistance-type igniter that is used for oil gas well electric cable bridge plug setting tool comprises:
Shell (3), said shell (3) insulating plug through being located at its first end place and the seal receptacle that is located at its second end place form a sealing inner chamber (8) and
Be arranged on ignition charge (5) and resistor (4) in the said inner chamber (8), first end of said resistor (4) passes said insulating plug and stretches out said shell (3), and second end links to each other with said shell (3),
It is characterized in that said resistor (4) is made up of with parallel way at least two resistance.
2. resistance-type igniter according to claim 1 is characterized in that, said resistor (4) is made up of with parallel way two identical resistance.
3. resistance-type igniter according to claim 1 and 2 is characterized in that, first end of said resistor (4) is made up of spring (1).
4. resistance-type igniter according to claim 3; It is characterized in that; Said insulating plug has central shaft hole, and this central shaft hole comprises hole enlargement hole (2-1) that is in the outer end and the undergauge hole (2-2) that communicates with said inner chamber (8), and the main body of said spring (1) is installed in the said hole enlargement hole (2-1).
5. resistance-type igniter according to claim 1 and 2 is characterized in that, said seal receptacle is ignition grain (6).
6. resistance-type igniter according to claim 1 and 2 is characterized in that, said insulating plug is bakelite plug (2).
7. resistance-type igniter according to claim 1 and 2 is characterized in that, said insulating plug and seal receptacle fix on through being adhesively fixed on the shell (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120500642XU CN202372072U (en) | 2011-12-05 | 2011-12-05 | Igniter for oil-gas well cable bridge plug setting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120500642XU CN202372072U (en) | 2011-12-05 | 2011-12-05 | Igniter for oil-gas well cable bridge plug setting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202372072U true CN202372072U (en) | 2012-08-08 |
Family
ID=46595769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120500642XU Expired - Lifetime CN202372072U (en) | 2011-12-05 | 2011-12-05 | Igniter for oil-gas well cable bridge plug setting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202372072U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113979821A (en) * | 2021-11-01 | 2022-01-28 | 中国船舶重工集团公司第七一八研究所 | High-reliability multistage ignition mode |
-
2011
- 2011-12-05 CN CN201120500642XU patent/CN202372072U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113979821A (en) * | 2021-11-01 | 2022-01-28 | 中国船舶重工集团公司第七一八研究所 | High-reliability multistage ignition mode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |
|
| CX01 | Expiry of patent term |