CN203337367U - Spring safety valve set-pressure value applying apparatus - Google Patents
Spring safety valve set-pressure value applying apparatus Download PDFInfo
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- CN203337367U CN203337367U CN2013202920767U CN201320292076U CN203337367U CN 203337367 U CN203337367 U CN 203337367U CN 2013202920767 U CN2013202920767 U CN 2013202920767U CN 201320292076 U CN201320292076 U CN 201320292076U CN 203337367 U CN203337367 U CN 203337367U
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- spring
- outer cover
- safety valve
- tube wall
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Abstract
The utility model discloses spring safety valve set-pressure value applying apparatus comprising a top cap, an outer cover, a base plate, a force application rod, a spring top seat, a spring and a spring base seat, wherein the upper end of the outer cover is open, the lower end of the outer cover is provided with a cylindrical structure of an end face which is provided a hole, a rolling ball is arranged in the hole, the bottom part of the end face is provided with a protrusion which is arranged along the axial direction of a tube wall, the top part of the end face is provided with a sleeve tube communicated with the end face, a screw thread is arranged between the sleeve tube and the tube wall, the inner side of the tube wall of the upper end of the outer cover is provided with an outward-facing recessed rim which is arranged along the circumferential direction of the tube wall, the top part of the outer cover is provided with the top cap, the bottom part of the outer cover is connected with the base plate, the force application rod is arranged in the base plate in such a way that the force application rod runs through the base plate, the upper surface of the base plate is provided with a groove which is arranged in the circumferential direction of the base plate, the rolling ball is arranged in the groove, the upper part of the force application rod penetrates into the sleeve tube, the outer wall of the lower part of the force application rod is provided with a screw thread, the spring top seat is arranged on the top end of the spring, the spring is arranged between the sleeve tube in the outer cover and the tube wall of the outer cover, the spring base seat is arranged at the bottom end of the spring, and the spring base seat is connected with the rolling ball in the via hole on the end face of the outer cover.
Description
Technical field
The utility model belongs to plant equipment and nuclear energy power generation field, the utility model relates to safety valve setting force value bringing device, particularly a kind of spring safety valve set-pressure value bringing device of additional set-pressure value during to the test of valve safety dumping take-off value in engineering test.
Background technology
Spring safety valve is to limit pressure cooker exhaust in the safe pressure scope, guarantees the device of safe handling.Spring safety valve is due to maloperation or do not clean the blocked device of setting up for gas outlet.The maximum height of opening according to flap is recently divided with the safety valve flow diameter, and safety valve can be divided into again spring micro-opening and seal two kinds of high voltage type safety valve and spring Fall lift safety valves.Spring safety valve is in practical implementation, the most general a kind of safety-valve.Its main work is pressure in pipeline or container while surpassing limit value, by the unlatching of spring safety valve flap, lays down the pressure exceeded, to guarantee safety.The simple principle of spring safety valve is as follows: the entrance of spring safety valve is welded on the container that needs pressure protect, and when the pressure in container surpasses limit value, safety valve jumping up, lay down unnecessary pressure from outlet.When pressure, during lower than the take-off value of safety valve, safety valve blowback, guarantee the sealing of container.
In engineering test, for the security feature of inspecting containers when surpassing certain pressure, observe the operating condition under the superpressure situation, usually need to improve the force value of safety valve jumping up.And the safety valve jumping up value of dispatching from the factory sets, therefore need an additional force value.
Yet now equipment and the method for safety valve externally applied forces value are all existed to some problems:
The first, by manual wrench, safety valve is applied the method for external pressure.Manual wrench is the part in some safety valve Machine Designs, uses this method of manual wrench, and because different operating personnel experience is different, dynamics is grasped different, and the power applied is different; By external tool, can cause damage to valve especially in violation of rules and regulations.
The second, by screw rod, safety valve being applied the method for external force, is by unloading the valve top part bolt, utilizes outer screw to exert pressure.This mode, simple to operate, but different operating personnel's strength is different, and externally applied forces is also different, does not meet the demand of engineering reality.
Existence due to the problems referred to above, the inventor analyzes and studies the structure of spring safety valve, safety valve application of force method is now studied, can be accurate, laborsaving in order to can develop, a kind of spring safety valve set-pressure value bringing device of meeting different actual demands of engineering.
The utility model content
In order to address the above problem, the inventor has carried out research with keen determination, and found that: upper end open is set, and lower end has the outer cover of end face tubular structure, the sleeve pipe of coming round with end face, the through hole that is provided with ball are set on end face, between described sleeve pipe and tube wall, screw thread are set; Top at outer cover arranges top cover; Set gradually from top to bottom the spring footstock between the inner sleeve of outer cover and outer cover tube wall, spring, spring pedestal, bottom and the ball of spring pedestal join; In the bottom of outer cover, the circular bottom plate that inside wears force application rod is set, described backplate surface is provided with along the groove of base plate circumferential direction; Thereby complete the utility model.
The purpose of this utility model is to provide following aspect:
(1) a kind of spring safety valve set-pressure value bringing device, it is characterized in that: this device comprises:
Outer cover, its upper end open, lower end has the tubular structure of end face, described end face perforate, ball 7 is set in hole, its end face bottom is along tube wall axial direction tool projection 6a, and its end face top arranges the sleeve pipe communicated with end face, between described sleeve pipe and tube wall, screw thread is set, tube wall inboard, outer cover upper end has outside recessed edge along the tube wall circumferential direction, the top of described outer cover arranges top cover, and the bottom of described outer cover and base plate 8 join
Base plate, its inside wears force application rod, above it, arranges along the groove of base plate circumferential direction, its top and outer cover bottom connection, described ball is located at inside grooves,
Spring, it is arranged between outer cover inner sleeve and outer cover tube wall,
(2) a kind of spring safety valve set-pressure value bringing device as described as above-mentioned (1), it is characterized in that: the bottom of the force application rod of this device is screwed into the top of spring safety valve, and described spring safety valve comprises:
Valve inlet 15, it is arranged at the place, bottom of spring safety valve,
Valve rod 12, it is arranged at the top of flap,
Valve export 13, it is arranged on the sidewall of spring safety valve, between itself and valve inlet, by flap, is separated by,
Top bolt 11, it is arranged at the top of spring safety valve.
(3) a kind of spring safety valve set-pressure value bringing device as described as above-mentioned (1), it is characterized in that: the end face of described outer cover is provided with two through holes, and described ball, spring pedestal, spring, spring footstock are all established two.
(4) a kind of spring safety valve set-pressure value bringing device as described as above-mentioned (3), it is characterized in that: tube wall top and the bottom of described outer cover are circle; The tube wall middle part of outer cover, have inside depression along the direction vertical with plane, spring place.
(5) a kind of spring safety valve set-pressure value bringing device as described as above-mentioned (4) is characterized in that: the tube wall outside of outer cover is provided with mechanical annular knurl.
(6) a kind of spring safety valve set-pressure value bringing device as described as above-mentioned (1) is characterized in that: described base plate is for circular, and above it, groove is greater than away from the center of circle one side groove gradient near the center of circle one side groove gradient.
(7) a kind of spring safety valve set-pressure value bringing device as described as above-mentioned (2), it is characterized in that: described top bolt and force application rod bottom outer wall all are threaded.
A kind of spring safety valve set-pressure value bringing device provided according to the utility model, have simple in structure, easy to operate, degree of accuracy is high, the characteristics such as time saving and energy saving, when saving manpower, has improved the accuracy that the spring safety valve door is applied to external force value.
The accompanying drawing explanation
Fig. 1 illustrates the sectional view according to a kind of spring safety valve set-pressure value bringing device of the utility model preferred implementation;
Fig. 2 illustrates the spring safety valve structural representation according to a kind of spring safety valve set-pressure value bringing device of the utility model preferred implementation;
Fig. 3 illustrates the right view according to a kind of spring safety valve set-pressure value bringing device of the utility model preferred implementation.
The drawing reference numeral explanation:
The 1-top cover
The 2-force application rod
3-spring footstock
The 4-spring
The 5-spring pedestal
The 6-outer cover
The 6a-projection
The 7-ball
The 8-base plate
11-top bolt
The 12-valve rod
The 13-valve export
The 14-flap
The 15-valve inlet
Embodiment
Below by the utility model is elaborated, characteristics of the present utility model and advantage will become more clear, clear and definite along with these explanations.
Here special-purpose word " exemplary " means " as example, embodiment or illustrative ".Here needn't be interpreted as being better than or being better than other embodiment as " exemplary " illustrated any embodiment.Although the various aspects of embodiment shown in the drawings, unless otherwise indicated, needn't draw accompanying drawing in proportion.
A kind of spring safety valve set-pressure value bringing device provided according to the utility model, as shown in Fig. 1-3, this device comprises:
Outer cover, its upper end open, lower end has the end face tubular structure, described end face perforate, ball 7 is set in hole, its end face bottom is along tube wall axial direction tool projection, and its end face top arranges the sleeve pipe communicated with end face, between described sleeve pipe and tube wall, screw thread is set, its tube wall inboard, upper end has outside recessed edge along the tube wall circumferential direction, the top of described outer cover arranges top cover, and the bottom of described outer cover and base plate 8 join
Base plate, its inside wears force application rod, above it, arranges along the groove of base plate circumferential direction, its top and outer cover bottom connection, described ball is located at inside grooves.
Spring, it is arranged between outer cover inner sleeve and outer cover tube wall,
One preferred embodiment in, as shown in Fig. 1-2, this device is used to spring safety valve to apply the set-pressure value, described spring safety valve comprises:
Valve inlet 15, it is arranged at the place, bottom of spring safety valve,
Valve rod 12, it is arranged at the top of flap,
Valve export 13, it is arranged on the sidewall of spring safety valve, between itself and valve inlet, by flap, is separated by,
Top bolt 11, it is arranged at the top of spring safety valve.
Wherein, the top bolt of spring pressure valve is opened, the bottom of the force application rod of this device is screwed into to the top of spring pressure valve, because the bottom outer wall of force application rod has screw thread and this thread size is identical with the thread size of top bolt, can guarantee that like this this device and spring safety valve are by screw-threaded engagement, for the outside value of exerting pressure provides support.When the force application rod bottom of this device contacts with the valve rod top of spring safety valve, when continuing the downward application of force and turning outer cover, start spring safety valve is applied to external pressure.When the external pressure applied reaches the setting value of set-pressure value bringing device, continue the downward application of force and turn outer cover, outer cover will dally, and the external pressure now spring safety valve applied can not continue to increase.Can unload this device after having tested.Because the groove on base plate is not symmetrical, the gradient is different.Guarantee that so different operating personnel are according to correct using method, the external pressure applied is all needed force value, and accuracy is high, easy to operate.
One preferred embodiment in, as shown in Fig. 1-2, the end face of described outer cover is provided with two holes, described ball, spring pedestal, spring, spring footstock are all established two, this kind of setting can, so that outer cover is stressed evenly, avoid outer cover to lopsidedness.
Wherein, the outside of outer cover adopts mechanical annular knurl, and mechanical annular knurl is set can, so that outer cover friction force increases, be conducive to the application of this device.
In further preferred embodiment, as shown in Figure 3, described outer cover, tube wall top and bottom are circle; At the tube wall middle part, along the direction vertical with plane, spring place, have and cave inward.
The space that this kind arranges between outer cover tube wall and sleeve pipe just in time holds a spring, therefore has like this effect of fixing spring, avoids the spring power that is squeezed to occur afterwards crooked, guarantees that spring all the time can be flexible along vertical direction.
Wherein, by adjusting the relative position of spring footstock in this device, and then can change the deformation quantity of spring, change the pressure of spring pedestal to ball, and then change the friction force that ball rolls, and then produce the external force of adjusting.
Wherein, when the end face of the outside cover of spring footstock is close, the power that spring applies ball by spring pedestal increases, when this device of application, the idle period that outer cover forms can become late, therefore force application rod is screwed into the length increase at spring safety valve top, and the set-pressure value that now this device applies spring safety valve can increase.Otherwise can diminish.
One preferred embodiment in, described base plate is circular, above it, groove is greater than away from the center of circle one side groove gradient near the center of circle one side groove gradient.Groove is positioned at the direction steeper of tightening, and is positioned at the direction of unscrewing more flat.Like this when this device applies the set-pressure value for spring safety valve, when the power applied reaches while adjusting, the top outer cover dallies automatically, and the outer cover inner spring is less than the friction force between ball and groove to the pressure of ball; And, when unloading the setting value of pressure bringing device, can guarantee that the top outer cover can not dally, and then unload this mechanical hook-up.
One preferred embodiment in, top bolt and force application rod bottom outer wall all are threaded.
Further preferred embodiment in, the screw thread of the two is identical.The two screw thread is identical, guarantees that the force application rod of this device can be fixed to the spring pressure valve top part, and then can apply the power of adjusting to valve rod.
Below in conjunction with the workflow to a kind of spring safety valve set-pressure value bringing device according to the utility model preferred implementation preferred embodiment, describe:
The first, according to required setting valve regulating spring footstock, fixing spring footstock.
The second, spring safety valve top bolt is opened, the force application rod of spring safety valve set-pressure value bringing device is screwed into to the top of spring safety valve.When the force application rod bottom of this device contacts with the valve rod top of spring safety valve, when continuing the downward application of force and turning outer cover, this device starts spring safety valve is applied to external pressure.
Three, when the external pressure applied reaches set-pressure value bringing device setting value (when spring is less than the friction force between ball and groove by spring pedestal to the pressure of ball), continue the downward application of force and turn outer cover, outer cover will dally, and the external pressure now spring safety valve applied can not continue to increase.
The 4th, after having tested, unload this device, the top bolt is installed to the spring safety valve top.
A kind of spring safety valve set-pressure value bringing device provided according to the utility model, have simple in structure, easy to operate, degree of accuracy is high, the characteristics such as time saving and energy saving, when saving manpower, has improved the accuracy that the spring safety valve door is applied to external force value.
Abovely in conjunction with embodiment and exemplary example, the utility model is had been described in detail, but these explanations can not be interpreted as restriction of the present utility model.It will be appreciated by those skilled in the art that in the situation that do not depart from the utility model spirit and scope, can carry out multiplely of equal valuely replacing, modifying or improve to technical solutions of the utility model and embodiment thereof, these all fall in scope of the present utility model.Protection domain of the present utility model is as the criterion with claims.
Claims (7)
1. a spring safety valve set-pressure value bringing device, it is characterized in that: this device comprises:
Top cover (1), it is arranged at outer cover (6) top,
Outer cover, its upper end open, lower end has the tubular structure of end face, described end face perforate, ball (7) is set in hole, its end face bottom is along tube wall axial direction tool projection (6a), and its end face top arranges the sleeve pipe communicated with end face, between described sleeve pipe and tube wall, screw thread is set, tube wall inboard, outer cover upper end has outside recessed edge along the tube wall circumferential direction, the top of described outer cover arranges top cover, and the bottom of described outer cover and base plate (8) join
Base plate, its inside wears force application rod, above it, arranges along the groove of base plate circumferential direction, its top and outer cover bottom connection, described ball is located at inside grooves,
Force application rod (2), it is arranged in base plate interior, its threading inside, top, its underpart outer wall has screw thread,
Spring footstock (3), it is arranged at the top of spring (4), and it is fixed in the threaded interior formed between sleeve pipe and tube wall,
Spring, it is arranged between outer cover inner sleeve and outer cover tube wall,
Spring pedestal (5), it is arranged at the bottom of spring, and the ball of the through hole inside on itself and outer cover end face joins.
2. a kind of spring safety valve set-pressure value bringing device as claimed in claim 1, it is characterized in that: the bottom of the force application rod of this device is screwed into the top of spring safety valve, and described spring safety valve comprises:
Valve inlet (15), it is arranged at the place, bottom of spring safety valve,
Flap (14), it is arranged at the top of valve inlet, with the valve inlet close proximity,
Valve rod (12), it is arranged at the top of flap,
Valve export (13), it is arranged on the sidewall of spring safety valve, between itself and valve inlet, by flap, is separated by,
Top bolt (11), it is arranged at the top of spring safety valve.
3. a kind of spring safety valve set-pressure value bringing device as claimed in claim 1, it is characterized in that: the end face of described outer cover is provided with two through holes, and described ball, spring pedestal, spring, spring footstock are all established two.
4. a kind of spring safety valve set-pressure value bringing device as claimed in claim 3, it is characterized in that: tube wall top and the bottom of described outer cover are circle; The tube wall middle part of outer cover, have inside depression along the direction vertical with plane, spring place.
5. a kind of spring safety valve set-pressure value bringing device as claimed in claim 4, is characterized in that: be provided with mechanical annular knurl outside the tube wall of outer cover.
6. a kind of spring safety valve set-pressure value bringing device as claimed in claim 1 is characterized in that: described base plate is for circular, and above it, groove is greater than away from the center of circle one side groove gradient near the center of circle one side groove gradient.
7. a kind of spring safety valve set-pressure value bringing device as claimed in claim 2, it is characterized in that: described top bolt and force application rod bottom outer wall all are threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202920767U CN203337367U (en) | 2013-05-24 | 2013-05-24 | Spring safety valve set-pressure value applying apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202920767U CN203337367U (en) | 2013-05-24 | 2013-05-24 | Spring safety valve set-pressure value applying apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203337367U true CN203337367U (en) | 2013-12-11 |
Family
ID=49706036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202920767U Withdrawn - After Issue CN203337367U (en) | 2013-05-24 | 2013-05-24 | Spring safety valve set-pressure value applying apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203337367U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180032A (en) * | 2013-05-24 | 2014-12-03 | 华北电力大学 | Spring-safety-valve set-pressure-value applying device |
-
2013
- 2013-05-24 CN CN2013202920767U patent/CN203337367U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180032A (en) * | 2013-05-24 | 2014-12-03 | 华北电力大学 | Spring-safety-valve set-pressure-value applying device |
| CN104180032B (en) * | 2013-05-24 | 2016-06-08 | 华北电力大学 | A kind of spring safety valve set-pressure value bringing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131211 Effective date of abandoning: 20160608 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |